Information transmission method and device

ABSTRACT

Embodiments of the present invention relate to the communications field, and disclose an information transmission method and device to implement beamforming on an SRS. A specific solution is as follows: A base station configures at least one first resource for a UE, where the first resource is used by the UE to transmit a target channel and/or signal; and the base station transmits first indication information to the UE, where the first indication information is used to indicate a correspondence between the first resource and a beam, or the first indication information is used to indicate a correspondence between the first resource and a second resource. The embodiments of the present invention are used in a beamforming process.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/289,121, filed on Feb. 28, 2019, which is a continuation ofInternational Application No. PCT/CN2017/108398, filed on Oct. 30, 2017,which claims priority to Chinese Patent Application No. 201610974102.2,filed on Nov. 3, 2016 and Chinese Patent Application No. 201710007820.7,filed on Jan. 5, 2017, and Chinese Patent Application No.201710686460.8, filed on Aug. 11, 2017. All of the aforementioned patentapplications are hereby incorporated by reference in their entireties.

TECHNICAL FIELD

Embodiments of the present invention relate to the communications field,and in particular, to an information transmission method and device.

BACKGROUND

In a Long Term Evolution (LTE) system, a user equipment (UE) maytransmit a sounding reference signal (SRS) to a base station, so thatthe base station performs an operation such as uplink channel qualityestimation based on the received SRS.

In addition, with continuous development of the mobile Internet,low-frequency spectrum resources are increasingly insufficient. Tosatisfy growing communication rate and capacity requirements, the 3rdGeneration Partnership Project (3GPP) incorporates high frequencies withrich frequency resources into a spectrum range used in a next-generationwireless communications system. However, compared with a wirelesscommunications system using a low frequency as an operating frequency, awireless communications system using a high frequency as an operatingfrequency has a relatively high transmission loss. In other words, atsame transmit power, coverage of a wireless communications system usinga high frequency as an operating frequency is far narrower than coverageof a wireless communications system using a low frequency as anoperating frequency. Therefore, to enhance coverage of a wirelesscommunications system using a high frequency as an operating frequency,a beamforming technology is introduced in the industry.

In conclusion, in a wireless communications system using a highfrequency as an operating frequency, if a UE needs to transmit an SRS,beamforming processing needs to be performed on the SRS. However,because the LTE system uses a low frequency as an operating frequency,when a UE transmits an SRS in the LTE system, beamforming processing isnot required. In other words, the prior art has no solution forperforming beamforming on the SRS.

SUMMARY

Embodiments of the present invention provide an information transmissionmethod and device to implement beamforming on an SRS.

To achieve the foregoing objective, the embodiments of the presentinvention use the following technical solutions:

According to a first aspect, an embodiment of the present inventionprovides an information transmission method, including:

configuring, by a base station, at least one first resource for a UE,where the first resource is used by the UE to transmit a target channeland/or signal; and transmitting, by the base station, first indicationinformation to the UE, where the first indication information is used toindicate a correspondence between the first resource and a beam, and thebeam is an uplink transmitting beam, or a downlink receiving beam, or adownlink transmitting beam, or an uplink receiving beam.

In the information transmission method provided by this embodiment ofthe present invention, the base station configures the at least onefirst resource used to transmit the target channel and/or signal for theUE, and transmits the first indication information used to indicate thecorrespondence between the first resource and the beam to the UE, sothat the UE can determine, based on the first resource and the firstindication information, a beam required for transmitting the targetchannel and/or signal. Therefore, when the target channel or signal orboth are an SRS, the UE can transmit the SRS by using the determinedbeam required for transmitting the target channel and/or signal, so asto implement beamforming on the SRS.

With reference to the first aspect, in a possible implementation, the atleast one first resource may be included in a resource group, and theresource group may include at least one resource subgroup.

With reference to the first aspect and the foregoing possibleimplementation, in another possible implementation, the target channeland/or signal may include at least one of the following: an SRS, aphysical random access channel (PRACH), a physical uplink shared channel(PUSCH), a physical uplink control channel (PUCCH), an uplink trackingsignal, an uplink discovery signal, an uplink beam reference signal, anuplink mobility reference signal, an uplink demodulation referencesignal, and an uplink phase tracking reference signal.

With reference to the first aspect and the foregoing possibleimplementation, in another possible implementation, the beam may beidentified by using at least one of the following: a port, a precodingmatrix, and a spatial feature parameter; or the beam may be a spatialfilter.

With reference to the first aspect and the foregoing possibleimplementation, in another possible implementation, the first resourcemay include at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

With reference to the first aspect and the foregoing possibleimplementation, in another possible implementation, the correspondencebetween the first resource and the beam may be indicated in thefollowing different manners:

manner 1: the first indication information may include an identity ofeach first resource in the resource subgroup, and a number of a beamcorresponding to the identity of each first resource;

manner 2: the first indication information may include an identity ofeach resource subgroup, and a number of a beam corresponding to theidentity of each resource subgroup;

manner 3: the first indication information may include an identity ofeach resource subgroup, and a number of each beam in a beam groupcorresponding to the identity of each resource subgroup, and the beamgroup includes at least one beam (different resource subgroups maycorrespond to a same beam group);

manner 4: the first indication information may include an identity ofeach resource subgroup, and a number of a beam group corresponding tothe identity of each resource subgroup (identities of different resourcesubgroups may correspond to a number of a same beam group);

manner 5: the first indication information may include a number of eachbeam in a beam group;

manner 6: the first indication information may include a number of abeam group;

manner 7: the first indication information may include an identity ofeach resource subgroup, and an optional range of beams corresponding tothe identity of each resource subgroup;

manner 8: the first indication information may include an identity ofeach first resource, and a number of a beam corresponding to theidentity of each first resource;

manner 9: the first indication information may include an identity ofeach first resource, and a number of each beam in a beam groupcorresponding to the identity of each first resource, where the beamgroup includes at least one beam (different first resources maycorrespond to a same beam group);

manner 10: the first indication information may include an identity ofeach first resource, and a number of a beam group corresponding to theidentity of each first resource (identities of different first resourcesmay correspond to a number of a same beam group); and manner 11: thefirst indication information may include an identity of each firstresource, and an optional range of beams corresponding to the identityof each first resource.

In the manner 1, the base station uses the first indication informationto indicate that, on first resources in a same resource subgroup, the UEneeds to transmit target channels and/or signals by using differenttransmitting beams. In this case, correspondingly, a pre-definition orpre-configuration manner may be used so that, on all the first resourcesin the same resource subgroup, the base station receives the targetchannels and/or signals by using a same receiving beam.

In the manner 2 to the manner 6, the base station uses the firstindication information to indicate that, on all first resources in asame resource subgroup, the UE needs to transmit target channels and/orsignals by using a same transmitting beam. In this case,correspondingly, a pre-definition or pre-configuration manner may beused so that, on the first resources in the same resource subgroup, thebase station receives the target channels and/or signals by usingdifferent receiving beams.

In the manner 2, if the beam is a downlink transmitting beam or anuplink receiving beam, the user equipment transmits, on each resourcesubgroup, a target channel and/or signal by using an uplink transmittingbeam paired with the downlink transmitting beam or the uplink receivingbeam.

Optionally, the first indication information may be configurationinformation. The configuration information may be carried in higherlayer signaling.

Alternatively, the first indication information may be configurationinformation or a configuration indication. The configuration informationis used to indicate the correspondence between the first resource andthe beam (the configuration information may include a plurality ofconfigurations), and the configuration information may be carried inhigher layer signaling. The configuration indication is used to indicatewhich configuration in the plurality of configurations is to be usedwhen the UE transmits the target channel and/or signal, and theconfiguration indication may be carried in a downlink control indicator(DCI).

With reference to the first aspect and the foregoing possibleimplementation, in another possible implementation, before thetransmitting, by the base station, first indication information to theUE, the information transmission method may further include:transmitting, by the base station, configuration information used toindicate a correspondence between the beam and a number of the beam tothe UE, where

the number of the beam may be a sequence number of the beam selected bythe base station.

With reference to the first aspect and the foregoing possibleimplementation, in another possible implementation, before thetransmitting, by the base station, first indication information to theUE, the information transmission method may further include:transmitting, by the base station to the UE, second indicationinformation that is used by the UE to divide the resource group into theat least one resource subgroup.

With reference to the first aspect and the foregoing possibleimplementation, in another possible implementation, to enable the basestation to configure a resource for the UE based on a capability of theUE, before the configuring, by a base station, at least one firstresource for the UE, the information transmission method may furtherinclude: receiving, by the base station, capability indicationinformation transmitted by the UE, where the capability indicationinformation includes a maximum quantity of beams supported by the UE ina capability type, or the capability indication information includes aquantized value of a maximum quantity of beams supported by the UE in acapability type; and correspondingly, the configuring, by a basestation, at least one first resource for the UE may specificallyinclude: configuring, by the base station, the at least one firstresource for the UE based on the capability indication information.

With reference to the first aspect and the foregoing possibleimplementation, in another possible implementation, the capability typemay include a beam management stage and/or an optional range of beams.The capability type may be predefined, or may be configured by the basestation.

With reference to the first aspect and the foregoing possibleimplementation, the beam may also be a spatial filter, precoding matrix,or a spatial weight.

According to a second aspect, an embodiment of the present inventionprovides an information transmission method, including:

configuring, by a base station, at least one first resource for a UE,where the first resource is used by the UE to transmit a target channeland/or signal; and transmitting, by the base station, first indicationinformation to the UE, where the first indication information is used toindicate a correspondence between the first resource and a secondresource, and the correspondence between the first resource and thesecond resource may include at least one of the following:

a quasi co-location QCL relationship exists between an antenna port forthe target channel and/or signal and an antenna port for a channeland/or signal transmitted on the second resource;

the target channel and/or signal is transmitted by using a same beam asa channel and/or signal transmitted on the second resource; and

the target channel and/or signal is transmitted by using a same spatialfilter as a channel and/or signal transmitted on the second resource.

In the information transmission method provided by this embodiment ofthe present invention, the base station configures the at least onefirst resource used to transmit the target channel and/or signal for theUE, and transmits the first indication information used to indicate thecorrespondence between the first resource and the second resource to theUE, so that the UE can determine, based on the first resource, the firstindication information, and the second resource, a beam required fortransmitting the target channel and/or signal; or so that the UE candetermine, based on the first indication information and the secondresource, a beam required for transmitting the target channel and/orsignal; or so that the UE can determine, based on the second resourceand the first indication information, a beam used by the base station toreceive the target channel and/or signal, so as to further determine,based on the beam used by the base station to receive the target channeland/or signal, a beam required for transmitting the target channeland/or signal by the UE. Therefore, when the target channel or signal orboth are an SRS, the UE can transmit the SRS by using the determinedbeam required for transmitting the target channel and/or signal, so asto implement beamforming on the SRS.

With reference to the second aspect, in a possible implementation, thebeam may also be a spatial filter, precoding, or a spatial weight.

With reference to the second aspect, in a possible implementation, theat least one first resource is included in a resource group, and theresource group may include at least one resource subgroup.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the target channeland/or signal may include at least one of the following: an SRS, aPRACH, a PUSCH, a PUCCH, an uplink tracking signal, an uplink discoverysignal, an uplink beam reference signal, an uplink mobility referencesignal, an uplink demodulation reference signal, and an uplink phasetracking reference signal.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first resourcemay include at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the second resourcemay include at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe UE to transmit information to the base station before the UEtransmits the target channel and/or signal; or the second resource mayinclude at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe base station to transmit information to the UE before the UEtransmits the target channel and/or signal. The second resource may be aresource used to transmit at least one of the following channels and/orsignals: an SRS, a PRACH, a PUSCH, a PUCCH, an uplink tracking signal,an uplink discovery signal, an uplink beam reference signal, an uplinkmobility reference signal, an uplink demodulation reference signal, aprimary synchronization signal, a secondary synchronization signal, asynchronization signal block, a demodulation reference signal of aphysical broadcast channel, a CSI-RS, a tracking reference signal (TRS),a phase tracking reference signal (PT-RS), a demodulation referencesignal of a physical downlink control channel, and a demodulationreference signal of a physical downlink shared channel. Optionally, thephysical downlink control channel may be a control resource set(CORESET), or may be a physical downlink control channel carrying arandom access response or control information of system information.Optionally, the physical downlink shared channel may be a physicaldownlink shared channel carrying system information.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each first resource inthe resource subgroup and the second resource.

The base station uses the first indication information to indicate thatfirst resources in the resource subgroup correspond to different secondresources. In other words, on the first resources in the same resourcesubgroup, the UE needs to transmit target channels and/or signals byusing different transmitting beams. In this case, correspondingly, apre-definition or pre-configuration manner may be used so that, on allthe first resources in the same resource subgroup, the base stationreceives the target channels and/or signals by using a same receivingbeam.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resourcein the resource subgroup, and an identity of a second resourcecorresponding to the identity of each first resource; or the firstindication information specifically includes information used toindicate that a quasi co-location (QCL) relationship exists between anantenna port for a signal on each first resource and an antenna port fora signal on a second resource; or the first indication informationspecifically includes an identity of a second resource corresponding toeach first resource. Optionally, when the first indication informationincludes the identity of the second resource corresponding to each firstresource, the first indication information may include one or moreidentities of second resources, where a quantity of identities of secondresources is the same as a quantity of first resources, and acorrespondence between the first resource and each of the secondresources indicated by the first indication information may bepredefined.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each firstresource and an optional range of beams.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each resource subgroupand the second resource.

The base station uses the first indication information to indicate thatall first resources in a same resource subgroup correspond to a samesecond resource. In other words, on all the first resources in the sameresource subgroup, the UE needs to transmit target channels and/orsignals by using a same transmitting beam. In this case,correspondingly, a pre-definition or pre-configuration manner may beused so that, on the first resources in the same resource subgroup, thebase station receives the target channels and/or signals by usingdifferent receiving beams.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each resourcesubgroup, and an identity of a second resource corresponding to theidentity of each resource subgroup; or the first indication informationmay specifically include information used to indicate that a QCLrelationship exists between an antenna port for a signal on eachresource subgroup and an antenna port for a signal on a second resource;or the first indication information may specifically include an identityof a second resource corresponding to each resource subgroup.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each resource subgroupand a second-resource group, and the second-resource group includes atleast one second resource. The base station uses the first indicationinformation to indicate that all first resources in a same resourcesubgroup correspond to a same second resource. In other words, on allthe first resources in the same resource subgroup, the UE needs totransmit target channels and/or signals by using a same transmittingbeam. In this case, correspondingly, a pre-definition orpre-configuration manner may be used so that, on the first resources inthe same resource subgroup, the base station receives the targetchannels and/or signals by using different receiving beams.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each resourcesubgroup, and an identity of each second resource in a second-resourcegroup corresponding to the identity of each resource subgroup; or thefirst indication information may specifically include an identity ofeach resource subgroup, and an identity of a second-resource groupcorresponding to the identity of each resource subgroup; or the firstindication information may specifically include information used toindicate that a QCL relationship exists between an antenna port for asignal on each resource subgroup and an antenna port for a signal on asecond-resource group.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include an identity of each second resource in asecond-resource group; or the first indication information may includean identity of a second-resource group. Optionally, when the firstindication information includes the identity of the second-resourcegroup, a quantity of second resources in the second-resource group isthe same as a quantity of first-resource subgroups in the first-resourcegroup, and a correspondence between a second resource in thesecond-resource group and a first-resource subgroup in thefirst-resource group as indicated in the first indication information ispredefined. The base station uses the first indication information toindicate that all first resources in a same resource subgroup correspondto a same second resource. In other words, on all the first resources inthe same resource subgroup, the UE needs to transmit target channelsand/or signals by using a same transmitting beam. In this case,correspondingly, a pre-definition or pre-configuration manner may beused so that, on the first resources in the same resource subgroup, thebase station receives the target channels and/or signals by usingdifferent receiving beams.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each resourcesubgroup and an optional range of beams.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each first resource andthe second resource.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resource,and an identity of a second resource corresponding to the identity ofeach first resource; or the first indication information mayspecifically include information used to indicate that a QCLrelationship exists between an antenna port for a signal on each firstresource and an antenna port for a signal on a second resource.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, in a correspondencebetween each first resource and a second-resource group, thesecond-resource group includes at least one second resource.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resource,and an identity of each second resource in a second-resource groupcorresponding to the identity of each first resource; or the firstindication information may specifically include an identity of eachfirst resource, and an identity of a second-resource group correspondingto the identity of each first resource; or the first indicationinformation may specifically include information used to indicate that aQCL relationship exists between an antenna port for a signal on eachfirst resource and an antenna port for a signal on a second-resourcegroup; or the first indication information may specifically include anidentity of each second resource in a second-resource groupcorresponding to each first resource; or the first indicationinformation may specifically include an identity of a second-resourcegroup corresponding to each first resource.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each firstresource and an optional range of beams.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the second-resourcegroup includes one or more second resources.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, existence of a QCLrelationship means having a same antenna port parameter.

Alternatively, existence of a QCL relationship means that a sameparameter exists in reference signals corresponding to antenna ports, orexistence of a QCL relationship means that the user equipment maydetermine, based on a parameter of an antenna port, a parameter of anantenna port having the QCL relationship with the antenna port, orexistence of a QCL relationship means that two antenna ports have a sameparameter, or existence of a QCL relationship means that a differencebetween parameters of two antenna ports is less than a threshold. Theparameter may be at least one of: a delay spread, a Doppler spread, aDoppler frequency shift, an average delay, an average gain, an angle ofarrival (AOA), an average AOA, an AOA spread, an angle of departure(AOD), an average angle of departure AOD, an AOD spread, a receiveantenna spatial correlation parameter, a transmit antenna spatialcorrelation parameter, a transmitting beam, a receiving beam, a resourceidentity, a transmit end power azimuth spectrum (PAS,), a receive endPAS, and a PAS. The beam includes at least one of the following:precoding, a weight sequence number, a beam sequence number, and aspatial filter. The azimuth may be a decomposition value in differentdimensions, or a combination of decomposition values in differentdimensions. The antenna ports are antenna ports having different antennaport numbers, and/or antenna ports having a same antenna port number andtransmitting or receiving information in different time and/or frequencyand/or code domain resources, and/or antenna ports having differentantenna port numbers and transmitting or receiving information indifferent time and/or frequency and/or code domain resources. Theresource identity includes a resource identity of a channel stateinformation reference signal (CSI-RS), or a resource identity of an SRS,used to indicate a beam on a resource, or a resource identity of asynchronization signal or a synchronization signal block, or a resourceidentity of a preamble sequence transmitted on a PRACH, or a resourceidentity of a DMRS, used to indicate a beam on a resource. For example,a spatial QCL relationship between a port for a downlink signal andanother port for a downlink signal or between a port for an uplinksignal and another port for an uplink signal may be that the two signalsmay have a same AOA or AOD, used to indicate that the two signals have asame receiving beam or transmitting beam. For another example, a QCLrelationship between a downlink signal and an uplink signal or between aport for an uplink signal and a port for a downlink signal may be that acorrespondence exists between an AOA of one signal and an AOD of theother signal in the two signals, or that a correspondence exists betweenan AOD of one signal and an AOA of the other signal in the two signals.In other words, by using a beam correspondence, an uplink transmittingbeam may be determined based on a downlink receiving beam, or a downlinkreceiving beam may be determined based on an uplink transmitting beam.

Signals transmitted on ports having the QCL relationship may also beunderstood as having a corresponding beam, where the corresponding beamincludes at least one of the following: a same receiving beam, a sametransmitting beam, a transmitting beam corresponding to a receiving beam(corresponding to a reciprocity scenario), and a receiving beamcorresponding to a transmitting beam (corresponding to a reciprocityscenario).

Signals transmitted on ports having the QCL relationship may also beunderstood as signals received or transmitted by using a same spatialfilter. The spatial filter may be at least one of the following:precoding, a weight of an antenna port, phase deflection of an antennaport, and an amplitude gain of an antenna port.

Signals transmitted on ports having the QCL relationship may also beunderstood as having a corresponding beam pair link (BPL), where thecorresponding BPL includes at least one of the following: a samedownlink BPL, a same uplink BPL, an uplink BPL corresponding to adownlink BPL, and a downlink BPL corresponding to an uplink BPL.

Optionally, the QCL relationship may have another name, without changingthe technical essence, for example, may also be referred to as a spatialQCL relationship or a reciprocal QCL relationship.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may be configuration information. The configurationinformation may be carried in higher layer signaling.

Alternatively, the first indication information may be configurationinformation or a configuration indication. The configuration informationis used to indicate the correspondence between the first resource andthe beam or the second resource (the configuration information mayinclude a plurality of configurations simultaneously), and theconfiguration information may be carried in higher layer signaling. Theconfiguration indication is used to indicate which configuration in theplurality of configurations is to be used when the UE transmits thetarget channel and/or signal, and the configuration indication may becarried in DCI.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, a time offsetbetween a time unit in which a channel carrying the first indicationinformation is located and the second resource is predefined, or isdetermined based on third configuration information of the base station.Optionally, the time offset may be a positive value, a negative value,or 0. The time unit may be a timeslot, a subframe, a symbol, or amini-timeslot.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, a time offsetbetween the first resource and the second resource is predefined, or isdetermined based on third configuration information of the base station.Optionally, the time offset may be a positive value, a negative value,or 0. The time unit may be a timeslot, a subframe, a symbol, or amini-timeslot.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, a time offsetbetween the second resource and a time unit in which a channel carryingthe first indication information is located is predefined, or isdetermined based on fourth configuration information of the basestation. Optionally, the time offset may be a positive value or 0. Thetime unit may be a timeslot, a subframe, a symbol, or a mini-timeslot.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, a time offsetbetween the second resource and the first resource is predefined, or isdetermined based on third configuration information of the base station.Optionally, the time offset may be a positive value, a negative value,or 0. The time unit may be a timeslot, a subframe, a symbol, or amini-timeslot.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, before thetransmitting, by the base station, first indication information to theUE, the information transmission method may further include:transmitting, by the base station to the UE, second indicationinformation that is used by the UE to divide the resource group into theat least one resource subgroup.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, to enable the basestation to configure a resource for the UE based on a capability of theUE, before the configuring, by a base station, at least one firstresource for the UE, the information transmission method may furtherinclude: receiving, by the base station, capability indicationinformation transmitted by the UE, where the capability indicationinformation includes a maximum quantity of beams supported by the UE ina capability type, or the capability indication information includes aquantized value of a maximum quantity of beams supported by the UE in acapability type; and correspondingly, the configuring, by a basestation, at least one first resource for the UE may specificallyinclude: configuring, by the base station, the at least one firstresource for the UE based on the capability indication information.

With reference to the second aspect and the foregoing possibleimplementation, in another possible implementation, the capability typemay include a beam management stage and/or an optional range of beams.The capability type may be predefined, or may be configured by the basestation.

According to a third aspect, an embodiment of the present inventionprovides an information transmission method, including:

obtaining, by a UE, at least one first resource configured by a basestation for the UE, where the first resource is used by the UE totransmit a target channel and/or signal; and receiving, by the UE, firstindication information transmitted by the base station, where the firstindication information is used to indicate a correspondence between thefirst resource and a beam, and the beam is an uplink transmitting beam,or a downlink receiving beam, or a downlink transmitting beam, or anuplink receiving beam.

In the information transmission method provided by this embodiment ofthe present invention, the UE obtains the at least one first resourcethat is configured by the base station for the UE and used to transmitthe target channel and/or signal, and receives the first indicationinformation that is transmitted by the base station and used to indicatethe correspondence between the first resource and the beam. Therefore,the UE can determine, based on the first resource and the firstindication information, a beam required for transmitting the targetchannel and/or signal, and can transmit the target channel and/or signalon the first resource and on the beam required for transmitting thetarget channel and/or signal. When the target channel or signal or bothare an SRS, the UE transmits the SRS by using the determined beamrequired for transmitting the target channel and/or signal, so as toimplement beamforming on the SRS.

With reference to the third aspect, in a possible implementation, the atleast one first resource may be included in a resource group, and theresource group may include at least one resource subgroup.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation, after the receiving,by the UE, first indication information transmitted by the base station,the information transmission method may further include:

determining, by the UE based on the first resource and the firstindication information, a beam required for transmitting the targetchannel and/or signal, namely, an uplink transmitting beam, andtransmitting the target channel and/or signal on the first resource andon the uplink transmitting beam.

When the beam is an uplink transmitting beam, the UE may directlydetermine, based on the first resource and the correspondence betweenthe first resource and the beam, the uplink transmitting beam; when thebeam is a downlink receiving beam, the UE may first determine, based onthe first resource and the correspondence between the first resource andthe beam, the downlink receiving beam, and then determine the uplinktransmitting beam based on the downlink receiving beam by using acorrespondence between uplink and downlink beams (the correspondencebetween the uplink and downlink beams may be obtained from reciprocityof uplink and downlink channels); or when the beam is a downlinktransmitting beam, the UE may first determine, based on the firstresource and the correspondence between the first resource and the beam,the downlink transmitting beam, then determine a downlink receiving beambased on the downlink transmitting beam by using a correspondencebetween uplink and downlink beams, and finally determine the uplinktransmitting beam based on the downlink receiving beam by using thecorrespondence between the uplink and downlink beams.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation, the target channeland/or signal may include at least one of the following: an SRS, aPRACH, a PUSCH, a PUCCH, an uplink tracking signal, an uplink discoverysignal, an uplink beam reference signal, an uplink mobility referencesignal, an uplink demodulation reference signal, and an uplink phasetracking reference signal.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation, the beam may be aport, or may be precoding.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation, the first resourcemay include at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation,

the first indication information may include an identity of each firstresource in the resource subgroup, and a number of a beam correspondingto the identity of each first resource; and correspondingly, thedetermining, by the UE, an uplink transmitting beam based on the firstresource and the first indication information may be specifically:determining, by the UE, a number of a beam corresponding to an identityof the first resource, and then determining the uplink transmitting beambased on the beam corresponding to the number of the beam; or

the first indication information may include an identity of eachresource subgroup, and a number of a beam corresponding to the identityof each resource subgroup; and correspondingly, the determining, by theUE, an uplink transmitting beam based on the first resource and thefirst indication information may be specifically: determining, by theUE, an identity of a resource subgroup to which the first resourcebelongs, determining a number of a beam corresponding to the identity ofthe resource subgroup, and then determining the uplink transmitting beambased on the beam corresponding to the number of the beam; or

the first indication information may include an identity of eachresource subgroup, and a number of each beam in a beam groupcorresponding to the identity of each resource subgroup, where the beamgroup includes at least one beam; and correspondingly, the determining,by the UE, an uplink transmitting beam based on the first resource andthe first indication information may be specifically: determining, bythe UE, an identity of a resource subgroup to which the first resourcebelongs, determining a number of each beam in a beam group correspondingto the identity of the resource subgroup, and then determining theuplink transmitting beam based on a beam in the beam group; or

the first indication information may include an identity of eachresource subgroup, and a number of a beam group corresponding to theidentity of each resource subgroup; and correspondingly, thedetermining, by the UE, an uplink transmitting beam based on the firstresource and the first indication information may be specifically:determining, by the UE, an identity of a resource subgroup to which thefirst resource belongs, determining a number of a beam groupcorresponding to the identity of the resource subgroup, and thendetermining the uplink transmitting beam based on a beam in the beamgroup; or

the first indication information may include a number of each beam in abeam group, or the first indication information may include a number ofa beam group; and correspondingly, the determining, by the UE, an uplinktransmitting beam based on the first resource and the first indicationinformation may be specifically: determining, by the UE, the uplinktransmitting beam based on a beam in the beam group, where a resourcesubgroup to which the first resource belongs corresponds to a beam; or

the first indication information may include an identity of eachresource subgroup, and an optional range of beams corresponding to theidentity of each resource subgroup; and correspondingly, thedetermining, by the UE, an uplink transmitting beam based on the firstresource and the first indication information may be specifically:determining, by the UE, an identity of a resource subgroup to which thefirst resource belongs, determining an optional range of beamscorresponding to the identity of the resource subgroup, and thendetermining the uplink transmitting beam based on the optional range ofbeams; or

the first indication information may include an identity of each firstresource, and a number of a beam corresponding to the identity of eachfirst resource; or

the first indication information may include an identity of each firstresource, and a number of each beam in a beam group corresponding to theidentity of each first resource, where the beam group includes at leastone beam; or

the first indication information may include an identity of each firstresource, and a number of a beam group corresponding to the identity ofeach first resource; or

the first indication information may include an identity of each firstresource, and an optional range of beams corresponding to the identityof each first resource.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation, before thereceiving, by the UE, first indication information transmitted by thebase station, the information transmission method may further include:receiving, by the UE, configuration information that is transmitted bythe base station and used to indicate a correspondence between the beamand a number of the beam. Correspondingly, when the UE determines thenumber of the beam based on the first indication information, the UE maydetermine, based on the configuration information, the beamcorresponding to the number, where the number of the beam may be asequence number of the beam selected by the base station.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation, before thereceiving, by the UE, first indication information transmitted by thebase station, the information transmission method may further include:receiving, by the UE, second indication information that is transmittedby the base station and used by the UE to divide the resource group intothe at least one resource subgroup, and dividing the resource group intothe at least one resource subgroup based on the second indicationinformation.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation, to enable the basestation to configure a resource for the UE based on a capability of theUE, before the obtaining, by the UE, at least one first resourceconfigured by a base station for the UE, the information transmissionmethod may further include: transmitting, by the UE, capabilityindication information to the base station, where the capabilityindication information includes a maximum quantity of beams supported bythe UE in a capability type, or the capability indication informationincludes a quantized value of a maximum quantity of beams supported bythe UE in a capability type.

With reference to the third aspect and the foregoing possibleimplementation, in another possible implementation, the capability typeincludes a beam management stage and/or an optional range of beams. Thecapability type may be predefined, or may be configured by the basestation.

According to a fourth aspect, an embodiment of the present inventionprovides an information transmission method, including:

obtaining, by a UE, at least one first resource configured by a basestation for the UE, where the first resource is used by the UE totransmit a target channel and/or signal; and receiving, by the UE, firstindication information transmitted by the base station, where the firstindication information is used to indicate a correspondence between thefirst resource and a second resource, and

the correspondence between the first resource and the second resourcemay include at least one of the following:

a quasi co-location QCL relationship exists between an antenna port forthe target channel and/or signal and an antenna port for a channeland/or signal transmitted on the second resource;

the target channel and/or signal is transmitted by using a same beam asa channel and/or signal transmitted on the second resource; and

the target channel and/or signal is transmitted by using a same spatialfilter as a channel and/or signal transmitted on the second resource.

In the information transmission method provided by this embodiment ofthe present invention, the UE obtains the at least one first resourcethat is configured by the base station for the UE and used to transmitthe target channel and/or signal, and receives the first indicationinformation that is transmitted by the base station and used to indicatethe correspondence between the first resource and the second resource.Therefore, the UE can determine, based on the first resource and thefirst indication information, a beam required for transmitting thetarget channel and/or signal, or determine, based on the firstindication information and the second resource, a beam required fortransmitting the target channel and/or signal, and can transmit thetarget channel and/or signal on the first resource and on the beamrequired for transmitting the target channel and/or signal. When thetarget channel or signal or both are an SRS, the UE transmits the SRS byusing the determined beam required for transmitting the target channeland/or signal, so as to implement beamforming on the SRS.

With reference to the fourth aspect, in a possible implementation, thebeam may also be a spatial filter, precoding, or a spatial weight.

With reference to the fourth aspect, in a possible implementation, theat least one first resource may be included in a resource group, and theresource group may include at least one resource subgroup.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, after the receiving,by the UE, first indication information transmitted by the base station,the information transmission method may further include: determining, bythe UE, the second resource based on the first resource and the firstindication information, and determining, based on a beam correspondingto the second resource, a beam required for transmitting the targetchannel and/or signal, namely, an uplink transmitting beam; andtransmitting, by the UE, the target channel and/or signal on the firstresource and on the uplink transmitting beam.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the target channeland/or signal may include at least one of the following: an SRS, aPRACH, a PUSCH, a PUCCH, an uplink tracking signal, an uplink discoverysignal, an uplink beam reference signal, an uplink mobility referencesignal, an uplink demodulation reference signal, and an uplink phasetracking reference signal.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first resourcemay include at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the second resourcemay include at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe UE to transmit information to the base station before the UEtransmits the target channel and/or signal; or the second resource mayinclude at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe base station to transmit information to the UE before the UEtransmits the target channel and/or signal.

The second resource may be a resource used to transmit at least one ofthe following channels and/or signals: an SRS, a PRACH, a PUSCH, aPUCCH, an uplink tracking signal, an uplink discovery signal, an uplinkbeam reference signal, an uplink mobility reference signal, an uplinkdemodulation reference signal, a primary synchronization signal, asecondary synchronization signal, a synchronization signal block, ademodulation reference signal of a physical broadcast channel, a CSI-RS,a tracking reference signal (TRS), a phase tracking reference signal(PT-RS), a demodulation reference signal of a physical downlink controlchannel, and a demodulation reference signal of a physical downlinkshared channel. Optionally, the physical downlink control channel may bea control resource set (CORESET), or may be a physical downlink controlchannel carrying a random access response or control information ofsystem information. Optionally, the physical downlink shared channel maybe a physical downlink shared channel carrying system information.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each first resource inthe resource subgroup and the second resource.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resourcein the resource subgroup, and an identity of a second resourcecorresponding to the identity of each first resource; or the firstindication information specifically includes information used toindicate that a QCL relationship exists between an antenna port for asignal on each first resource and an antenna port for a signal on asecond resource; or the first indication information specificallyincludes an identity of a second resource corresponding to each firstresource. Optionally, when the first indication information includes theidentity of the second resource corresponding to each first resource,the first indication information may include one or more identities ofsecond resources, where a quantity of identities of second resources isthe same as a quantity of first resources, and a correspondence betweenthe first resource and each of the second resources indicated by thefirst indication information may be predefined.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each firstresource and an optional range of beams.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each resource subgroupand the second resource.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each resourcesubgroup, and an identity of a second resource corresponding to theidentity of each resource subgroup; or the first indication informationmay specifically include information used to indicate that a QCLrelationship exists between an antenna port for a signal on eachresource subgroup and an antenna port for a signal on a second resource;or the first indication information may specifically include an identityof a second resource corresponding to each resource subgroup.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each resource subgroupand a second-resource group, and the second-resource group includes atleast one second resource.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each resourcesubgroup, and an identity of each second resource in a second-resourcegroup corresponding to the identity of each resource subgroup; or thefirst indication information may specifically include an identity ofeach resource subgroup, and an identity of a second-resource groupcorresponding to the identity of each resource subgroup; or the firstindication information may specifically include information used toindicate that a QCL relationship exists between an antenna port for asignal on each resource subgroup and an antenna port for a signal on asecond-resource group.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include an identity of each second resource in asecond-resource group; or the first indication information may includean identity of a second-resource group. Optionally, when the firstindication information includes the identity of the second-resourcegroup, a quantity of second resources in the second-resource group isthe same as a quantity of first-resource subgroups in the first-resourcegroup, and a correspondence between a second resource in thesecond-resource group and a first-resource subgroup in thefirst-resource group as indicated in the first indication information ispredefined.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each resourcesubgroup and an optional range of beams.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each first resource andthe second resource.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resource,and an identity of a second resource corresponding to the identity ofeach first resource; or the first indication information mayspecifically include information used to indicate that a QCLrelationship exists between an antenna port for a signal on each firstresource and an antenna port for a signal on a second resource.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, in a correspondencebetween each first resource and a second-resource group, thesecond-resource group includes at least one second resource.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resource,and an identity of each second resource in a second-resource groupcorresponding to the identity of each first resource; or the firstindication information may specifically include an identity of eachfirst resource, and an identity of a second-resource group correspondingto the identity of each first resource; or the first indicationinformation may specifically include information used to indicate that aQCL relationship exists between an antenna port for a signal on eachfirst resource and an antenna port for a signal on a second-resourcegroup; or the first indication information may specifically include anidentity of each second resource in a second-resource groupcorresponding to each first resource; or the first indicationinformation may specifically include an identity of a second-resourcegroup corresponding to each first resource.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each firstresource and an optional range of beams.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the second-resourcegroup includes one or more second resources.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, existence of a QCLrelationship means having a same antenna port parameter.

Alternatively, existence of a QCL relationship means that a sameparameter exists in reference signals corresponding to antenna ports, orexistence of a QCL relationship means that the user equipment maydetermine, based on a parameter of an antenna port, a parameter of anantenna port having the QCL relationship with the antenna port, orexistence of a QCL relationship means that two antenna ports have a sameparameter, or existence of a QCL relationship means that a differencebetween parameters of two antenna ports is less than a threshold. Theparameter may be at least one of: a delay spread, a Doppler spread, aDoppler frequency shift, an average delay, an average gain, an angle ofarrival (AOA), an average AOA, an AOA spread, an angle of departure(AOD), an average angle of departure AOD, an AOD spread, a receiveantenna spatial correlation parameter, a transmit antenna spatialcorrelation parameter, a transmitting beam, a receiving beam, a resourceidentity, a transmit end power azimuth spectrum (PAS,), a receive endPAS, and a PAS. The beam includes at least one of the following:precoding, a weight sequence number, a beam sequence number, and aspatial filter. The azimuth may be a decomposition value in differentdimensions, or a combination of decomposition values in differentdimensions. The antenna ports are antenna ports having different antennaport numbers, and/or antenna ports having a same antenna port number andtransmitting or receiving information in different time and/or frequencyand/or code domain resources, and/or antenna ports having differentantenna port numbers and transmitting or receiving information indifferent time and/or frequency and/or code domain resources. Theresource identity includes a resource identity of a CSI-RS, or aresource identity of an SRS, used to indicate a beam on a resource, or aresource identity of a synchronization signal or a synchronizationsignal block, or a resource identity of a preamble sequence transmittedon a PRACH, or a resource identity of a DMRS, used to indicate a beam ona resource. For example, a spatial QCL relationship between a port for adownlink signal and another port for a downlink signal or between a portfor an uplink signal and another port for an uplink signal may be thatthe two signals may have a same AOA or AOD, used to indicate that thetwo signals have a same receiving beam or transmitting beam. For anotherexample, a QCL relationship between a downlink signal and an uplinksignal or between a port for an uplink signal and a port for a downlinksignal may be that a correspondence exists between an AOA of one signaland an AOD of the other signal in the two signals, or that acorrespondence exists between an AOD of one signal and an AOA of theother signal in the two signals. In other words, by using a beamcorrespondence, an uplink transmitting beam may be determined based on adownlink receiving beam, or a downlink receiving beam may be determinedbased on an uplink transmitting beam.

Signals transmitted on ports having the spatial QCL relationship mayalso be understood as having a corresponding beam, where thecorresponding beam includes at least one of the following: a samereceiving beam, a same transmitting beam, a transmitting beamcorresponding to a receiving beam (corresponding to a reciprocityscenario), and a receiving beam corresponding to a transmitting beam(corresponding to a reciprocity scenario).

Signals transmitted on ports having the spatial QCL relationship mayalso be understood as signals received or transmitted by using a samespatial filter. The spatial filter may be at least one of the following:precoding, a weight of an antenna port, phase deflection of an antennaport, and an amplitude gain of an antenna port.

Signals transmitted on ports having the spatial QCL relationship mayalso be understood as having a corresponding beam pair link (BPL), wherethe corresponding BPL includes at least one of the following: a samedownlink BPL, a same uplink BPL, an uplink BPL corresponding to adownlink BPL, and a downlink BPL corresponding to an uplink BPL.

Optionally, the QCL relationship may have another name, without changingthe technical essence, for example, may also be referred to as a spatialQCL relationship or a reciprocal QCL relationship.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, before thereceiving, by the UE, first indication information transmitted by thebase station, the information transmission method may further include:receiving, by the UE, second indication information that is transmittedby the base station and used by the UE to divide the resource group intothe at least one resource subgroup, and dividing the resource group intothe at least one resource subgroup based on the second indicationinformation.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, to enable the basestation to configure a resource for the UE based on a capability of theUE, before the obtaining, by the UE, at least one first resourceconfigured by a base station for the UE, the information transmissionmethod may further include: transmitting, by the UE, capabilityindication information to the base station, where the capabilityindication information includes a maximum quantity of beams supported bythe UE in a capability type, or the capability indication informationincludes a quantized value of a maximum quantity of beams supported bythe UE in a capability type.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, the capability typemay include a beam management stage and/or an optional range of beams.The capability type may be predefined, or may be configured by the basestation.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, a time offsetbetween a time unit in which a channel carrying the first indicationinformation is located and the second resource is predefined, or isdetermined based on third configuration information of the base station.Optionally, the time offset may be a positive value, a negative value,or 0. The time unit may be a timeslot, a subframe, a symbol, or amini-timeslot.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, a time offsetbetween the first resource and the second resource is predefined, or isdetermined based on third configuration information of the base station.Optionally, the time offset may be a positive value, a negative value,or 0. The time unit may be a timeslot, a subframe, a symbol, or amini-timeslot.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, a time offsetbetween the second resource and a time unit in which a channel carryingthe first indication information is located is predefined, or isdetermined based on fourth configuration information of the basestation. Optionally, the time offset may be a positive value or 0. Thetime unit may be a timeslot, a subframe, a symbol, or a mini-timeslot.

With reference to the fourth aspect and the foregoing possibleimplementation, in another possible implementation, a time offsetbetween the second resource and the first resource is predefined, or isdetermined based on third configuration information of the base station.Optionally, the time offset may be a positive value, a negative value,or 0. The time unit may be a timeslot, a subframe, a symbol, or amini-timeslot.

According to a fifth aspect, an embodiment of the present inventionprovides a base station, including:

a configuration unit, configured to configure at least one firstresource for a UE, where the first resource is used by the UE totransmit a target channel and/or signal; and a transmitting unit,configured to transmit first indication information to the UE, where thefirst indication information is used to indicate a correspondencebetween the first resource and a beam, and the beam is an uplinktransmitting beam, or a downlink receiving beam, or a downlinktransmitting beam, or an uplink receiving beam.

With reference to the fifth aspect, in a possible implementation, the atleast one first resource may be included in a resource group, and theresource group may include at least one resource subgroup.

With reference to the fifth aspect and the foregoing possibleimplementation, in another possible implementation, the target channeland/or signal may include at least one of the following: an SRS, aPRACH, a PUSCH, a PUCCH, an uplink tracking signal, an uplink discoverysignal, an uplink beam reference signal, an uplink mobility referencesignal, an uplink demodulation reference signal, and an uplink phasetracking reference signal.

With reference to the fifth aspect and the foregoing possibleimplementation, in another possible implementation, the beam may be aport, or may be precoding.

With reference to the fifth aspect and the foregoing possibleimplementation, in another possible implementation, the first resourcemay include at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

With reference to the fifth aspect and the foregoing possibleimplementation, in another possible implementation, the correspondencebetween the first resource and the beam may be indicated in thefollowing different manners:

manner 1: the first indication information may include an identity ofeach first resource in the resource subgroup, and a number of a beamcorresponding to the identity of each first resource;

manner 2: the first indication information may include an identity ofeach resource subgroup, and a number of a beam corresponding to theidentity of each resource subgroup;

manner 3: the first indication information may include an identity ofeach resource subgroup, and a number of each beam in a beam groupcorresponding to the identity of each resource subgroup, and the beamgroup includes at least one beam (different resource subgroups maycorrespond to a same beam group);

manner 4: the first indication information may include an identity ofeach resource subgroup, and a number of a beam group corresponding tothe identity of each resource subgroup (identities of different resourcesubgroups may correspond to a number of a same beam group);

manner 5: the first indication information may include a number of eachbeam in a beam group;

manner 6: the first indication information may include a number of abeam group;

manner 7: the first indication information may include an identity ofeach resource subgroup, and an optional range of beams corresponding tothe identity of each resource subgroup;

manner 8: the first indication information may include an identity ofeach first resource, and a number of a beam corresponding to theidentity of each first resource;

manner 9: the first indication information may include an identity ofeach first resource, and a number of each beam in a beam groupcorresponding to the identity of each first resource, where the beamgroup includes at least one beam (different first resources maycorrespond to a same beam group);

manner 10: the first indication information may include an identity ofeach first resource, and a number of a beam group corresponding to theidentity of each first resource (identities of different first resourcesmay correspond to a number of a same beam group); and

manner 11: the first indication information may include an identity ofeach first resource, and an optional range of beams corresponding to theidentity of each first resource.

In the manner 1, the transmitting unit uses the first indicationinformation to indicate that, on first resources in a same resourcesubgroup, the UE needs to transmit target channels and/or signals byusing different transmitting beams. In this case, correspondingly, apre-definition or pre-configuration manner may be used so that, on allthe first resources in the same resource subgroup, the base stationreceives the target channels and/or signals by using a same receivingbeam.

In the manner 2 to the manner 6, the transmitting unit uses the firstindication information to indicate that, on all first resources in asame resource subgroup, the UE needs to transmit target channels and/orsignals by using a same transmitting beam. In this case,correspondingly, a pre-definition or pre-configuration manner may beused so that, on the first resources in the same resource subgroup, thebase station receives the target channels and/or signals by usingdifferent receiving beams.

In the manner 2, if the beam is a downlink transmitting beam or anuplink receiving beam, the user equipment transmits, on each resourcesubgroup, the target channel and/or signal by using an uplinktransmitting beam paired with the downlink transmitting beam or theuplink receiving beam.

Optionally, the first indication information may be configurationinformation. The configuration information may be carried in higherlayer signaling.

Alternatively, the first indication information may be configurationinformation or a configuration indication. The configuration informationis used to indicate the correspondence between the first resource andthe beam (the configuration information may include a plurality ofconfigurations simultaneously), and the configuration information may becarried in higher layer signaling. The configuration indication is usedto indicate which configuration in the plurality of configurations is tobe used when the UE transmits the target channel and/or signal, and theconfiguration indication may be carried in DCI.

With reference to the fifth aspect and the foregoing possibleimplementation, in another possible implementation, the transmittingunit is further configured to transmit configuration information used toindicate a correspondence between the beam and a number of the beam tothe UE, where

the number of the beam may be a sequence number of the beam selected bythe base station.

With reference to the fifth aspect and the foregoing possibleimplementation, in another possible implementation, the transmittingunit is further configured to transmit, to the UE, second indicationinformation that is used by the UE to divide the resource group into theat least one resource subgroup.

With reference to the fifth aspect and the foregoing possibleimplementation, in another possible implementation, to enable the basestation to configure a resource for the UE based on a capability of theUE, the base station may further include a receiving unit, configured toreceive capability indication information transmitted by the UE, wherethe capability indication information includes a maximum quantity ofbeams supported by the UE in a capability type, or the capabilityindication information includes a quantized value of a maximum quantityof beams supported by the UE in a capability type; and correspondingly,the configuration unit is specifically configured to configure the atleast one first resource for the UE based on the capability indicationinformation received by the receiving unit.

With reference to the fifth aspect and the foregoing possibleimplementation, in another possible implementation, the capability typemay include a beam management stage and/or an optional range of beams.The capability type may be predefined, or may be configured by the basestation.

According to a sixth aspect, an embodiment of the present inventionprovides a base station, including:

a configuration unit, configured to configure at least one firstresource for a UE, where the first resource is used by the UE totransmit a target channel and/or signal; and a transmitting unit,configured to transmit first indication information to the UE, where thefirst indication information is used to indicate a correspondencebetween the first resource and a second resource.

With reference to the sixth aspect, in a possible implementation, the atleast one first resource may be included in a resource group, and theresource group may include at least one resource subgroup.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the target channeland/or signal may include at least one of the following: an SRS, aPRACH, a PUSCH, a PUCCH, an uplink tracking signal, an uplink discoverysignal, an uplink beam reference signal, an uplink mobility referencesignal, an uplink demodulation reference signal, and an uplink phasetracking reference signal.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first resourcemay include at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the second resourcemay include at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe UE to transmit information to the base station before the UEtransmits the target channel and/or signal; or the second resource mayinclude at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe base station to transmit information to the UE before the UEtransmits the target channel and/or signal.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each first resource inthe resource subgroup and the second resource.

The transmitting unit uses the first indication information to indicatethat first resources in the resource subgroup correspond to differentsecond resources. In other words, on the first resources in the sameresource subgroup, the UE needs to transmit target channels and/orsignals by using different transmitting beams. In this case,correspondingly, a pre-definition or pre-configuration manner may beused so that, on all the first resources in the same resource subgroup,the base station receives the target channels and/or signals by using asame receiving beam.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resourcein the resource subgroup, and an identity of a second resourcecorresponding to the identity of each first resource; or the firstindication information specifically includes information used toindicate that a QCL relationship exists between an antenna port for asignal on each first resource and an antenna port for a signal on asecond resource.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each firstresource and an optional range of beams.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each resource subgroupand the second resource.

The transmitting unit uses the first indication information to indicatethat all first resources in a same resource subgroup correspond to asame second resource. In other words, on all the first resources in thesame resource subgroup, the UE needs to transmit target channels and/orsignals by using a same transmitting beam. In this case,correspondingly, a pre-definition or pre-configuration manner may beused so that, on the first resources in the same resource subgroup, thebase station receives the target channels and/or signals by usingdifferent receiving beams.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each resourcesubgroup, and an identity of a second resource corresponding to theidentity of each resource subgroup; or the first indication informationmay specifically include information used to indicate that a QCLrelationship exists between an antenna port for a signal on eachresource subgroup and an antenna port for a signal on a second resource.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each resource subgroupand a second-resource group, and the second-resource group includes atleast one second resource. The transmitting unit uses the firstindication information to indicate that all first resources in a sameresource subgroup correspond to a same second resource. In other words,on all the first resources in the same resource subgroup, the UE needsto transmit target channels and/or signals by using a same transmittingbeam. In this case, correspondingly, a pre-definition orpre-configuration manner may be used so that, on the first resources inthe same resource subgroup, the base station receives the targetchannels and/or signals by using different receiving beams.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each resourcesubgroup, and an identity of each second resource in a second-resourcegroup corresponding to the identity of each resource subgroup; or thefirst indication information may specifically include an identity ofeach resource subgroup, and an identity of a second-resource groupcorresponding to the identity of each resource subgroup; or the firstindication information may specifically include information used toindicate that a QCL relationship exists between an antenna port for asignal on each resource subgroup and an antenna port for a signal on asecond-resource group.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include an identity of each second resource in asecond-resource group; or the first indication information may includean identity of a second-resource group. The transmitting unit uses thefirst indication information to indicate that all first resources in asame resource subgroup correspond to a same second resource. In otherwords, on all the first resources in the same resource subgroup, the UEneeds to transmit target channels and/or signals by using a sametransmitting beam. In this case, correspondingly, a pre-definition orpre-configuration manner may be used so that, on the first resources inthe same resource subgroup, the base station receives the targetchannels and/or signals by using different receiving beams.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each resourcesubgroup and an optional range of beams.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each first resource andthe second resource.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resource,and an identity of a second resource corresponding to the identity ofeach first resource; or the first indication information mayspecifically include information used to indicate that a QCLrelationship exists between an antenna port for a signal on each firstresource and an antenna port for a signal on a second resource.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, in a correspondencebetween each first resource and a second-resource group, thesecond-resource group includes at least one second resource.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resource,and an identity of each second resource in a second-resource groupcorresponding to the identity of each first resource; or the firstindication information may specifically include an identity of eachfirst resource, and an identity of a second-resource group correspondingto the identity of each first resource; or the first indicationinformation may specifically include information used to indicate that aQCL relationship exists between an antenna port for a signal on eachfirst resource and an antenna port for a signal on a second-resourcegroup.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each firstresource and an optional range of beams.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, existence of a QCLrelationship means having a same antenna port parameter.

Alternatively, existence of a QCL relationship means that a sameparameter exists in reference signals corresponding to antenna ports, orexistence of a QCL relationship means that the user equipment maydetermine, based on a parameter of an antenna port, a parameter of anantenna port having the QCL relationship with the antenna port, orexistence of a QCL relationship means that two antenna ports have a sameparameter, or existence of a QCL relationship means that a differencebetween parameters of two antenna ports is less than a threshold. Theparameter may be at least one of: a delay spread, a Doppler spread, aDoppler frequency shift, an average delay, an average gain, an AOA, anaverage AOA, an AOA spread, an AOD, an average angle of departure AOD,an AOD spread, a receive antenna spatial correlation parameter, atransmitting beam, a receiving beam, and a resource identity. The beamincludes at least one of the following: precoding, a weight sequencenumber, and a beam sequence number. The azimuth may be a decompositionvalue in different dimensions, or a combination of decomposition valuesin different dimensions. The antenna ports are antenna ports havingdifferent antenna port numbers, and/or antenna ports having a sameantenna port number and transmitting or receiving information indifferent time and/or frequency and/or code domain resources, and/orantenna ports having different antenna port numbers and transmitting orreceiving information in different time and/or frequency and/or codedomain resources. The resource identity includes a resource identity ofa CSI-RS or a resource identity of an SRS.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may be configuration information. The configurationinformation may be carried in higher layer signaling.

Alternatively, the first indication information may be configurationinformation or a configuration indication. The configuration informationis used to indicate the correspondence between the first resource andthe beam (the configuration information may include a plurality ofconfigurations simultaneously), and the configuration information may becarried in higher layer signaling. The configuration indication is usedto indicate which configuration in the plurality of configurations is tobe used when the UE transmits the target channel and/or signal, and theconfiguration indication may be carried in DCI.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the transmittingunit is further configured to transmit, to the UE, second indicationinformation that is used by the UE to divide the resource group into theat least one resource subgroup.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, to enable the basestation to configure a resource for the UE based on a capability of theUE, the base station may further include a receiving unit, configured toreceive capability indication information transmitted by the UE, wherethe capability indication information includes a maximum quantity ofbeams supported by the UE in a capability type, or the capabilityindication information includes a quantized value of a maximum quantityof beams supported by the UE in a capability type; and correspondingly,the configuration unit is specifically configured to configure the atleast one first resource for the UE based on the capability indicationinformation received by the receiving unit.

With reference to the sixth aspect and the foregoing possibleimplementation, in another possible implementation, the capability typemay include a beam management stage and/or an optional range of beams.The capability type may be predefined, or may be configured by the basestation.

According to a seventh aspect, an embodiment of the present inventionprovides a UE, including:

an obtaining unit, configured to obtain at least one first resourceconfigured by a base station for the UE, where the first resource isused by the UE to transmit a target channel and/or signal; and areceiving unit, configured to receive first indication informationtransmitted by the base station, where the first indication informationis used to indicate a correspondence between the first resource and abeam, and the beam is an uplink transmitting beam, or a downlinkreceiving beam, or a downlink transmitting beam, or an uplink receivingbeam.

With reference to the seventh aspect, in a possible implementation, theat least one first resource may be included in a resource group, and theresource group may include at least one resource subgroup.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation, the UE may furtherinclude:

a determining unit, configured to determine, based on the first resourceobtained by the obtaining unit and the first indication informationreceived by the receiving unit, a beam required for transmitting thetarget channel and/or signal, namely, an uplink transmitting beam; and atransmitting unit, configured to transmit the target channel and/orsignal on the first resource and on the uplink transmitting beamdetermined by the determining unit.

When the beam is an uplink transmitting beam, the determining unit maydirectly determine, based on the first resource and the correspondencebetween the first resource and the beam, the uplink transmitting beam;when the beam is a downlink receiving beam, the determining unit mayfirst determine, based on the first resource and the correspondencebetween the first resource and the beam, the downlink receiving beam,and then determine the uplink transmitting beam based on the downlinkreceiving beam by using a correspondence between uplink and downlinkbeams (the correspondence between the uplink and downlink beams may beobtained from reciprocity of uplink and downlink channels); or when thebeam is a downlink transmitting beam, the determining unit may firstdetermine, based on the first resource and the correspondence betweenthe first resource and the beam, the downlink transmitting beam, thendetermine a downlink receiving beam based on the downlink transmittingbeam by using a correspondence between uplink and downlink beams, andfinally determine the uplink transmitting beam based on the downlinkreceiving beam by using the correspondence between the uplink anddownlink beams.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation, the target channeland/or signal may include at least one of the following: an SRS, aPRACH, a PUSCH, a PUCCH, an uplink tracking signal, an uplink discoverysignal, an uplink beam reference signal, an uplink mobility referencesignal, an uplink demodulation reference signal, and an uplink phasetracking reference signal.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation, the beam may be aport, or may be precoding.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation, the first resourcemay include at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation,

the first indication information may include an identity of each firstresource in the resource subgroup, and a number of a beam correspondingto the identity of each first resource; and correspondingly, thedetermining unit is specifically configured to determine a number of abeam corresponding to an identity of the first resource, and thendetermine the uplink transmitting beam based on the beam correspondingto the number of the beam; or

the first indication information may include an identity of eachresource subgroup, and a number of a beam corresponding to the identityof each resource subgroup; and correspondingly, the determining unit isspecifically configured to determine an identity of a resource subgroupto which the first resource belongs, determine a number of a beamcorresponding to the identity of the resource subgroup, and thendetermine the uplink transmitting beam based on the beam correspondingto the number of the beam; or

the first indication information may include an identity of eachresource subgroup, and a number of each beam in a beam groupcorresponding to the identity of each resource subgroup, where the beamgroup includes at least one beam; and correspondingly, the determiningunit is specifically configured to determine an identity of a resourcesubgroup to which the first resource belongs, determine a number of eachbeam in a beam group corresponding to the identity of the resourcesubgroup, and then determine the uplink transmitting beam based on abeam in the beam group; or

the first indication information may include an identity of eachresource subgroup, and a number of a beam group corresponding to theidentity of each resource subgroup; and correspondingly, the determiningunit is specifically configured to determine an identity of a resourcesubgroup to which the first resource belongs, determine a number of abeam group corresponding to the identity of the resource subgroup, andthen determine the uplink transmitting beam based on a beam in the beamgroup; or

the first indication information may include a number of each beam in abeam group, or the first indication information may include a number ofa beam group; and correspondingly, the determining unit is specificallyconfigured to determine the uplink transmitting beam based on a beam inthe beam group, where a resource subgroup to which the first resourcebelongs corresponds to a beam; or

the first indication information may include an identity of eachresource subgroup, and an optional range of beams corresponding to theidentity of each resource subgroup; and correspondingly, the determiningunit is specifically configured to determine an identity of a resourcesubgroup to which the first resource belongs, determine an optionalrange of beams corresponding to the identity of the resource subgroup,and then determine the uplink transmitting beam based on the optionalrange of beams; or

the first indication information may include an identity of each firstresource, and a number of a beam corresponding to the identity of eachfirst resource; or

the first indication information may include an identity of each firstresource, and a number of each beam in a beam group corresponding to theidentity of each first resource, where the beam group includes at leastone beam; or

the first indication information may include an identity of each firstresource, and a number of a beam group corresponding to the identity ofeach first resource; or

the first indication information may include an identity of each firstresource, and an optional range of beams corresponding to the identityof each first resource.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation, the receiving unitis further configured to receive configuration information that istransmitted by the base station and used to indicate a correspondencebetween the beam and a number of the beam. Correspondingly, when thedetermining unit determines the number of the beam based on the firstindication information, the determining unit may determine, based on theconfiguration information received by the receiving unit, the beamcorresponding to the number, where the number of the beam may be asequence number of the beam selected by the base station.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation, the receiving unitis further configured to receive second indication information that istransmitted by the base station and used by the UE to divide theresource group into the at least one resource subgroup, and divide theresource group into the at least one resource subgroup based on thesecond indication information.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation, to enable the basestation to configure a resource for the UE based on a capability of theUE, the transmitting unit is further configured to transmit capabilityindication information to the base station, where the capabilityindication information includes a maximum quantity of beams supported bythe UE in a capability type, or the capability indication informationincludes a quantized value of a maximum quantity of beams supported bythe UE in a capability type.

With reference to the seventh aspect and the foregoing possibleimplementation, in another possible implementation, the capability typeincludes a beam management stage and/or an optional range of beams. Thecapability type may be predefined, or may be configured by the basestation.

According to an eighth aspect, an embodiment of the present inventionprovides a UE, including:

an obtaining unit, configured to obtain at least one first resourceconfigured by a base station for the UE, where the first resource isused by the UE to transmit a target channel and/or signal; and areceiving unit, configured to receive first indication informationtransmitted by the base station, where the first indication informationis used to indicate a correspondence between the first resource and asecond resource.

With reference to the eighth aspect, in a possible implementation, theat least one first resource may be included in a resource group, and theresource group may include at least one resource subgroup.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the UE may furtherinclude: a determining unit, configured to determine the second resourcebased on the first resource and the first indication information, anddetermine, based on a beam corresponding to the second resource, a beamrequired for transmitting the target channel and/or signal, namely, anuplink transmitting beam; and a transmitting unit, configured totransmit the target channel and/or signal on the first resource and onthe uplink transmitting beam.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the target channeland/or signal may include at least one of the following: an SRS, aPRACH, a PUSCH, a PUCCH, an uplink tracking signal, an uplink discoverysignal, an uplink beam reference signal, an uplink mobility referencesignal, an uplink demodulation reference signal, and an uplink phasetracking reference signal.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first resourcemay include at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the second resourcemay include at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe transmitting unit to transmit information to the base station beforethe transmitting unit transmits the target channel and/or signal; or thesecond resource may include at least one of: a time domain resource, afrequency domain resource, a code domain resource, and an antenna portthat are used by the base station to transmit information to the UEbefore the transmitting unit transmits the target channel and/or signal.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each first resource inthe resource subgroup and the second resource.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resourcein the resource subgroup, and an identity of a second resourcecorresponding to the identity of each first resource; or the firstindication information specifically includes information used toindicate that a QCL relationship exists between an antenna port for asignal on each first resource and an antenna port for a signal on asecond resource.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each firstresource and an optional range of beams.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each resource subgroupand the second resource.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each resourcesubgroup, and an identity of a second resource corresponding to theidentity of each resource subgroup; or the first indication informationmay specifically include information used to indicate that a QCLrelationship exists between an antenna port for a signal on eachresource subgroup and an antenna port for a signal on a second resource.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each resource subgroupand a second-resource group, and the second-resource group includes atleast one second resource.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each resourcesubgroup, and an identity of each second resource in a second-resourcegroup corresponding to the identity of each resource subgroup; or thefirst indication information may specifically include an identity ofeach resource subgroup, and an identity of a second-resource groupcorresponding to the identity of each resource subgroup; or the firstindication information may specifically include information used toindicate that a QCL relationship exists between an antenna port for asignal on each resource subgroup and an antenna port for a signal on asecond-resource group.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include an identity of each second resource in asecond-resource group; or the first indication information may includean identity of a second-resource group.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each resourcesubgroup and an optional range of beams.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may include a correspondence between each first resource andthe second resource.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resource,and an identity of a second resource corresponding to the identity ofeach first resource; or the first indication information mayspecifically include information used to indicate that a QCLrelationship exists between an antenna port for a signal on each firstresource and an antenna port for a signal on a second resource.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, in a correspondencebetween each first resource and a second-resource group, thesecond-resource group includes at least one second resource.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may specifically include an identity of each first resource,and an identity of each second resource in a second-resource groupcorresponding to the identity of each first resource; or the firstindication information may specifically include an identity of eachfirst resource, and an identity of a second-resource group correspondingto the identity of each first resource; or the first indicationinformation may specifically include information used to indicate that aQCL relationship exists between an antenna port for a signal on eachfirst resource and an antenna port for a signal on a second-resourcegroup.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the first indicationinformation may further include a correspondence between each firstresource and an optional range of beams.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, existence of a QCLrelationship means having a same antenna port parameter.

Alternatively, existence of a QCL relationship means that a sameparameter exists in reference signals corresponding to antenna ports, orexistence of a QCL relationship means that the user equipment maydetermine, based on a parameter of an antenna port, a parameter of anantenna port having the QCL relationship with the antenna port, orexistence of a QCL relationship means that two antenna ports have a sameparameter, or existence of a QCL relationship means that a differencebetween parameters of two antenna ports is less than a threshold. Theparameter may be at least one of: a delay spread, a Doppler spread, aDoppler frequency shift, an average delay, an average gain, an angle ofarrival AOA, an average AOA, an AOA spread, an angle of departure AOD,an average angle of departure AOD, an AOD spread, a receive antennaspatial correlation parameter, a transmitting beam, a receiving beam,and a resource identity. The beam includes at least one of thefollowing: precoding, a weight sequence number, and a beam sequencenumber. The azimuth may be a decomposition value in differentdimensions, or a combination of decomposition values in differentdimensions. The antenna ports are antenna ports having different antennaport numbers, and/or antenna ports having a same antenna port number andtransmitting or receiving information in different time and/or frequencyand/or code domain resources, and/or antenna ports having differentantenna port numbers and transmitting or receiving information indifferent time and/or frequency and/or code domain resources. Theresource identity includes a resource identity of a CSI-RS or a resourceidentity of an SRS.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the receiving unitis further configured to receive second indication information that istransmitted by the base station and used by the UE to divide theresource group into the at least one resource subgroup, and divide theresource group into the at least one resource subgroup based on thesecond indication information.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, to enable the basestation to configure a resource for the UE based on a capability of theUE, the transmitting unit is further configured to transmit capabilityindication information to the base station, where the capabilityindication information includes a maximum quantity of beams supported bythe UE in a capability type, or the capability indication informationincludes a quantized value of a maximum quantity of beams supported bythe UE in a capability type.

With reference to the eighth aspect and the foregoing possibleimplementation, in another possible implementation, the capability typemay include a beam management stage and/or an optional range of beams.The capability type may be predefined, or may be configured by the basestation.

According to a ninth aspect, an embodiment of the present inventionprovides a capability reporting method, including:

transmitting, by a UE, capability indication information to a basestation based on a capability type, where the capability indicationinformation includes a maximum quantity of beams supported by the UE inthe capability type, or the capability indication information includes aquantized value of a maximum quantity of beams supported by the UE inthe capability type.

In the capability reporting method provided by this embodiment of thepresent invention, the UE transmits, to the base station based on thecapability type, the capability indication information including themaximum quantity of beams or the quantized value of the maximum quantityof beams supported by the UE in the capability type, so that the basestation can allocate a first resource to the UE based on the capabilityindication information of the UE. This avoids resource waste caused byallocation of excessive resources to the UE, or a problem of incompletebeam search caused by allocation of insufficient first resources to theUE.

With reference to the ninth aspect, in a possible implementation, thecapability type includes a beam management stage and/or an optionalrange of beams, and the beam is a port or precoding. The capability typemay be predefined, or may be configured by the base station.

According to a tenth aspect, an embodiment of the present inventionprovides a capability reporting method, including:

receiving, by a base station, capability indication informationtransmitted by a UE, where the capability indication informationincludes a maximum quantity of beams supported by the UE in a capabilitytype, or the capability indication information includes a quantizedvalue of a maximum quantity of beams supported by the UE in a capabilitytype.

In the capability reporting method provided by this embodiment of thepresent invention, the base station receives the capability indicationinformation transmitted by the UE and including the maximum quantity ofbeams or the quantized value of the maximum quantity of beams supportedby the UE in the capability type, so as to allocate a first resource tothe UE based on the capability indication information of the UE. Thisavoids resource waste caused by allocation of excessive resources to theUE, or a problem of incomplete beam search caused by allocation ofinsufficient first resources to the UE.

With reference to the tenth aspect, in a possible implementation, thecapability type includes a beam management stage and/or an optionalrange of beams, and the beam is a port or precoding. The capability typemay be predefined, or may be configured by the base station.

According to an eleventh aspect, an embodiment of the present inventionprovides a UE, including:

a transmitting unit, configured to transmit capability indicationinformation to a base station based on a capability type, where thecapability indication information includes a maximum quantity of beamssupported by the UE in the capability type, or the capability indicationinformation includes a quantized value of a maximum quantity of beamssupported by the UE in the capability type.

With reference to the eleventh aspect, in a possible implementation, thecapability type includes a beam management stage and/or an optionalrange of beams, and the beam is a port or precoding. The capability typemay be predefined, or may be configured by the base station.

According to a twelfth aspect, an embodiment of the present inventionprovides a base station, including:

a receiving unit, configured to receive capability indicationinformation transmitted by a UE, where the capability indicationinformation includes a maximum quantity of beams supported by the UE ina capability type, or the capability indication information includes aquantized value of a maximum quantity of beams supported by the UE in acapability type.

With reference to the twelfth aspect, in a possible implementation, thecapability type includes a beam management stage and/or an optionalrange of beams, and the beam is a port or precoding. The capability typemay be predefined, or may be configured by the base station.

According to a thirteenth aspect, an embodiment of the present inventionprovides a resource indication method, including:

transmitting, by a base station, indication information to a UE, wherethe indication information includes a number of a beam and an identityof a resource corresponding to the number of the beam, or a number of aresource and an identity of the resource corresponding to the number ofthe resource.

In the resource indication method provided by this embodiment of thepresent invention, the base station transmits, to the UE, the indicationinformation including the number of the beam and the identity of theresource corresponding to the number of the beam, or the base stationtransmits, to the UE, the indication information including the number ofthe resource and the identity of the resource corresponding to thenumber of the resource, so that the UE determines, based on theindication information, a beam or a candidate set of beams required fortransmitting information, and transmits the information by using thedetermined beam, so as to implement beamforming. The base station maynumber only some resource identities, so as to reduce signalingoverheads when the base station indicates the number of the beam or thenumber of the resource.

With reference to the thirteenth aspect, in a possible implementation,the beam may be a port, or may be precoding.

With reference to the thirteenth aspect and the foregoing possibleimplementation, in another possible implementation, the resource mayinclude at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

According to a fourteenth aspect, an embodiment of the present inventionprovides a resource indication method, including:

receiving, by a UE, indication information transmitted by a basestation, where the indication information includes a number of a beamand an identity of a resource corresponding to the number of the beam,or a number of a resource and an identity of the resource correspondingto the number of the resource.

In the resource indication method provided by this embodiment of thepresent invention, the UE receives the indication informationtransmitted by the base station, where the indication informationincludes the number of the beam and the identity of the resourcecorresponding to the number of the beam, or the number of the resourceand the identity of the resource corresponding to the number of theresource, so that the UE can determine, based on the indicationinformation, a beam or a candidate set of beams required fortransmitting information, and transmit the information by using thedetermined beam, so as to implement beamforming. The base station maynumber only some resource identities, so as to reduce signalingoverheads when the base station indicates the number of the beam or thenumber of the resource.

With reference to the fourteenth aspect, in a possible implementation,the beam may be a port, or may be precoding.

With reference to the fourteenth aspect and the foregoing possibleimplementation, in another possible implementation, the resource mayinclude at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

According to a fifteenth aspect, an embodiment of the present inventionprovides a base station, including:

a transmitting unit, configured to transmit indication information to aUE, where the indication information includes a number of a beam and anidentity of a resource corresponding to the number of the beam, or anumber of a resource and an identity of the resource corresponding tothe number of the resource.

With reference to the fifteenth aspect, in a possible implementation,the beam may be a port, or may be precoding.

With reference to the fifteenth aspect and the foregoing possibleimplementation, in another possible implementation, the resource mayinclude at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

According to a sixteenth aspect, an embodiment of the present inventionprovides a UE, including:

a receiving unit, configured to receive indication informationtransmitted by a base station, where the indication information includesa number of a beam and an identity of a resource corresponding to thenumber of the beam, or a number of a resource and an identity of theresource corresponding to the number of the resource.

With reference to the sixteenth aspect, in a possible implementation,the beam may be a port, or may be precoding.

With reference to the sixteenth aspect and the foregoing possibleimplementation, in another possible implementation, the resource mayinclude at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

According to a seventeenth aspect, an embodiment of the presentinvention provides a base station, including a processor, a memory, anda transceiver, where

the memory is configured to store a computer-executable instruction; andwhen the base station runs, the processor executes thecomputer-executable instruction stored in the memory, so that the basestation performs the information transmission method in any one of thefirst aspect and the possible implementations of the first aspect, orperforms the information transmission method in any one of the secondaspect and the possible implementations of the second aspect, orperforms the capability reporting method in the tenth aspect or thepossible implementation of the tenth aspect, or performs the resourceindication transmission method in any one of the thirteenth aspect andthe possible implementations of the thirteenth aspect.

According to an eighteenth aspect, an embodiment of the presentinvention provides a UE, including a processor, a memory, and atransceiver, where

the memory is configured to store a computer-executable instruction; andwhen the UE runs, the processor executes the computer-executableinstruction stored in the memory, so that the UE performs theinformation transmission method in any one of the third aspect and thepossible implementations of the third aspect, or performs theinformation transmission method in any one of the fourth aspect and thepossible implementations of the fourth aspect, or performs thecapability reporting method in the ninth aspect or the possibleimplementation of the ninth aspect, or performs the resource indicationtransmission method in any one of the fourteenth aspect and the possibleimplementations of the fourteenth aspect.

According to a nineteenth aspect, an embodiment of the present inventionprovides an information transmission method, including:

configuring, by a base station, at least one first resource for a userequipment UE, where the first resource is used by the UE to transmit afirst channel and/or signal on a first antenna port;

transmitting, by the base station, first indication information to theUE, where the first indication information is used to indicate acorrespondence between the first resource and a second resource; and

receiving, by the base station on the second resource, a second channeland/or signal transmitted by the UE on a second antenna port, andreceiving, by the base station, the first channel and/or signaltransmitted by the UE on the first antenna port, where a quasico-location QCL relationship exists between the first antenna port andthe second antenna port, or a beam for transmitting the first channeland/or signal by the UE is the same as a beam for transmitting thesecond channel and/or signal by the UE; or

transmitting, by the base station, a third channel and/or signal on thesecond resource and on a third antenna port to the UE, and receiving, bythe base station, the first channel and/or signal transmitted by the UEon the first antenna port, where a quasi co-location QCL relationshipexists between the first antenna port and the third antenna port, or abeam for transmitting the first channel and/or signal by the UEcorresponds to a beam for receiving the third channel and/or signal bythe UE.

According to a twentieth aspect, an embodiment of the present inventionprovides an information transmission method, including:

obtaining, by a user equipment UE, at least one first resourceconfigured by a base station for the UE, where the first resource isused by the UE to transmit a first channel and/or signal on a firstantenna port;

receiving, by the UE, first indication information transmitted by thebase station, where the first indication information is used to indicatea correspondence between the first resource and a second resource; and

transmitting, by the UE, a second channel and/or signal on the secondresource and on a second antenna port to the base station, andtransmitting, by the UE, the first channel and/or signal on the firstantenna port to the base station, where a quasi co-location QCLrelationship exists between the first antenna port and the secondantenna port, or a beam for transmitting the first channel and/or signalby the UE is the same as a beam for transmitting the second channeland/or signal by the UE; or

receiving, by the UE, a third channel and/or signal transmitted by thebase station on the second resource and on a third antenna port, andtransmitting, by the UE, the first channel and/or signal on the firstantenna port to the base station, where a quasi co-location QCLrelationship exists between the first antenna port and the third antennaport, or a beam for transmitting the first channel and/or signal by theUE corresponds to a beam for receiving the third channel and/or signalby the UE.

According to a twenty-first aspect, an embodiment of the presentinvention provides a base station, including a configuration unit, atransmitting unit, and a receiving unit, where

the configuration unit is configured to configure at least one firstresource for a user equipment UE, where the first resource is used bythe UE to transmit a first channel and/or signal on a first antennaport;

the transmitting unit is configured to transmit first indicationinformation to the UE, where the first indication information is used toindicate a correspondence between the first resource and a secondresource; and

the receiving unit is configured to receive, on the second resource, asecond channel and/or signal transmitted by the UE on a second antennaport, and the receiving unit is further configured to receive the firstchannel and/or signal transmitted by the UE on the first antenna port,where a quasi co-location QCL relationship exists between the firstantenna port and the second antenna port, or a beam for transmitting thefirst channel and/or signal by the UE is the same as a beam fortransmitting the second channel and/or signal by the UE; or

the transmitting unit is configured to transmit a third channel and/orsignal on the second resource and on a third antenna port to the UE, andthe receiving unit is further configured to receive the first channeland/or signal transmitted by the UE on the first antenna port, where aquasi co-location QCL relationship exists between the first antenna portand the third antenna port, or a beam for transmitting the first channeland/or signal by the UE corresponds to a beam for receiving the thirdchannel and/or signal by the UE.

According to a twenty-second aspect, an embodiment of the presentinvention provides a user equipment UE, including an obtaining unit, areceiving unit, and a transmitting unit, where

the obtaining unit is configured to obtain at least one first resourceconfigured by a base station for the UE, where the first resource isused by the UE to transmit a first channel and/or signal on a firstantenna port;

the receiving unit is configured to receive first indication informationtransmitted by the base station, where the first indication informationis used to indicate a correspondence between the first resource and asecond resource; and

the transmitting unit is configured to transmit a second channel and/orsignal on the second resource and on a second antenna port to the basestation, and the transmitting unit is further configured to transmit thefirst channel and/or signal on the first antenna port to the basestation, where a quasi co-location QCL relationship exists between thefirst antenna port and the second antenna port, or a beam fortransmitting the first channel and/or signal by the transmitting unit isthe same as a beam for transmitting the second channel and/or signal bythe transmitting unit; or

the receiving unit is configured to receive a third channel and/orsignal transmitted by the base station on the second resource and on athird antenna port, and the transmitting unit is configured to transmitthe first channel and/or signal on the first antenna port to the basestation, where a quasi co-location QCL relationship exists between thefirst antenna port and the third antenna port, or a beam fortransmitting the first channel and/or signal by the transmitting unitcorresponds to a beam for receiving the third channel and/or signal bythe receiving unit.

According to a twenty-third aspect, an embodiment of the presentinvention provides a computer storage medium, configured to store acomputer software instruction used by the foregoing base station, wherethe computer software instruction includes a program used to perform theforegoing information transmission method, capability reporting method,or resource indication method.

According to a twenty-fourth aspect, an embodiment of the presentinvention provides a computer storage medium, configured to store acomputer software instruction used by the foregoing UE, where thecomputer software instruction includes a program used to perform theforegoing information transmission method, capability reporting method,or resource indication method.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a simplified schematic diagram of a communications system towhich an embodiment of the present invention may be applied according toan embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base station according toan embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a UE according to anembodiment of the present invention;

FIG. 4 is a flowchart of an information transmission method according toan embodiment of the present invention;

FIG. 5 is a flowchart of another information transmission methodaccording to an embodiment of the present invention;

FIG. 5-1 is a schematic diagram of a relationship between resources andtimeslots according to an embodiment of the present invention;

FIG. 5-2 is a schematic diagram of another relationship betweenresources and timeslots according to an embodiment of the presentinvention;

FIG. 5-3 is a schematic diagram of another relationship betweenresources and timeslots according to an embodiment of the presentinvention;

FIG. 5-4 is a schematic diagram of another relationship betweenresources and timeslots according to an embodiment of the presentinvention;

FIG. 5-5 is a schematic diagram of another relationship betweenresources and timeslots according to an embodiment of the presentinvention;

FIG. 5-6 is a schematic diagram of another relationship betweenresources and timeslots according to an embodiment of the presentinvention;

FIG. 6 is a flowchart of another information transmission methodaccording to an embodiment of the present invention;

FIG. 7 is a schematic diagram for indicating a beam capability of a UEaccording to an embodiment of the present invention;

FIG. 8 is a flowchart of another information transmission methodaccording to an embodiment of the present invention;

FIG. 9 is a flowchart of a capability reporting method according to anembodiment of the present invention;

FIG. 10 is a flowchart of a resource indication method according to anembodiment of the present invention;

FIG. 11 is a schematic diagram of a correspondence between resources andbeams according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another base stationaccording to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of another base stationaccording to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of another UE according to anembodiment of the present invention; and

FIG. 15 is a schematic structural diagram of another UE according to anembodiment of the present invention.

DESCRIPTION OF EMBODIMENTS

To implement beamforming on an SRS, an embodiment of the presentinvention provides an information transmission method. A base stationconfigures at least one first resource for a UE, where the firstresource is used by the UE to transmit a target channel and/or signal;and the base station transmits, to the UE, first indication informationused to indicate a correspondence between the first resource and a beamor used to indicate a correspondence between the first resource and asecond resource, so that the UE can determine, based on the firstresource and the first indication information, a beam required fortransmitting the target channel and/or signal. Therefore, when thetarget channel or signal or both are an SRS, the UE can transmit the SRSby using the determined beam required for transmitting the targetchannel and/or signal, so as to implement beamforming on the SRS.

The beam may be identified by using at least one of the following: aport, a precoding matrix, and a spatial feature parameter; or the beammay be a spatial filter.

Optionally, the beam may also be understood as a spatial resource, andmay be a transmit or receive precoding vector having an energytransmission direction. In addition, the transmit or receive precodingvector can be identified by using index information. The energytransmission direction may indicate that a signal that is received in aspatial position and has experienced precoding processing by using theprecoding vector has relatively good receive power, for example,satisfies a receive demodulation signal-to-noise ratio. The energytransmission direction may also indicate that same signals transmittedfrom different spatial positions and received by using the precodingvector have different receive power.

Optionally, a same communications device (such as a terminal device or anetwork device) may have different precoding vectors, and differentdevices may also have different precoding vectors, which correspond todifferent beams.

With respect to a configuration or capability of a communicationsdevice, the communications device may use one or more of differentprecoding vectors at a same time. In other words, one or more beams maybe formed at the same time. Beam information may be identified by usingindex information. Optionally, the index information may correspond to aresource identity (ID) configured for a UE. For example, the indexinformation may correspond to a configured ID or resource of a channelstate information reference signal (CSI-RS), or may correspond to aconfigured ID or resource of an uplink sounding reference signal (SRS).Alternatively, optionally, the index information may be indexinformation explicitly or implicitly carried by a signal or channel thatis carried on a beam. For example, the index information may be indexinformation of the beam, indicated by a synchronization signal or abroadcast channel that is transmitted by using the beam.

A beam pair may include a transmitting beam of a transmit end and areceiving beam of a receive end, also referred to as an uplink beam anda downlink beam. For example, the beam pair may include a transmittingbeam of the base station and a receiving beam of the UE, or atransmitting beam of the UE and a receiving beam of the base station.

The target channel and/or signal in this embodiment of the presentinvention may include at least one of the following: an SRS, a PRACH, aPUSCH, a PUCCH, an uplink tracking signal, an uplink discovery signal,an uplink beam reference signal, an uplink mobility reference signal, anuplink demodulation reference signal, and an uplink phase trackingreference signal. The sounding reference signal is used to obtainchannel quality information and/or is used for beam management; thePRACH is used for uplink access; the PUSCH is used at least for uplinkdata transmission; the PUCCH is used at least for uplink controlinformation transmission; the uplink demodulation reference signal isused for demodulation of an uplink channel; the uplink tracking signal,the uplink discovery signal, the uplink beam reference signal, and theuplink mobility reference signal are used for beam management and/orradio resource management (RRM) measurement; and the uplink phasetracking reference signal is used for phase tracking.

A quasi co-location (QCL) relationship in this embodiment of the presentinvention may have the following meaning:

Existence of a QCL relationship means having a same antenna portparameter; or existence of a QCL relationship means that a sameparameter exists in reference signals corresponding to antenna ports, orexistence of a QCL relationship means that the user equipment maydetermine, based on a parameter of an antenna port, a parameter of anantenna port having the QCL relationship with the antenna port, orexistence of a QCL relationship means that two antenna ports have a sameparameter, or existence of a QCL relationship means that a differencebetween parameters of two antenna ports is less than a threshold. Theparameter may be at least one of: a delay spread, a Doppler spread, aDoppler frequency shift, an average delay, an average gain, an angle ofarrival (AOA), an average AOA, an AOA spread, an angle of departure(AOD), an average angle of departure AOD, an AOD spread, a receiveantenna spatial correlation parameter, a transmit antenna spatialcorrelation parameter, a transmitting beam, a receiving beam, a resourceidentity, a transmit end power azimuth spectrum (PAS), a receive endPAS, and a PAS. The beam includes at least one of the following:precoding, a weight sequence number, a beam sequence number, and aspatial filter. The azimuth may be a decomposition value in differentdimensions, or a combination of decomposition values in differentdimensions. The antenna ports are antenna ports having different antennaport numbers, and/or antenna ports having a same antenna port number andtransmitting or receiving information in different time and/or frequencyand/or code domain resources, and/or antenna ports having differentantenna port numbers and transmitting or receiving information indifferent time and/or frequency and/or code domain resources. Theresource identity includes a resource identity of a channel stateinformation reference signal (CSI-RS), or a resource identity of an SRS,used to indicate a beam on a resource, or a resource identity of asynchronization signal or a synchronization signal block, or a resourceidentity of a preamble sequence transmitted on a PRACH, or a resourceidentity of a DMRS, used to indicate a beam on a resource. For example,a spatial QCL relationship between a port for a downlink signal andanother port for a downlink signal or between a port for an uplinksignal and another port for an uplink signal may be that the two signalsmay have a same AOA or AOD, used to indicate that the two signals have asame receiving beam or transmitting beam. For another example, a QCLrelationship between a downlink signal and an uplink signal or between aport for an uplink signal and a port for a downlink signal may be that acorrespondence exists between an AOA of one signal and an AOD of theother signal in the two signals, or that a correspondence exists betweenan AOD of one signal and an AOA of the other signal in the two signals.In other words, by using a beam correspondence, an uplink transmittingbeam may be determined based on a downlink receiving beam, or a downlinkreceiving beam may be determined based on an uplink transmitting beam.

Signals transmitted on ports having the QCL relationship may also beunderstood as having a corresponding beam, where the corresponding beamincludes at least one of the following: a same receiving beam, a sametransmitting beam, a transmitting beam corresponding to a receiving beam(corresponding to a reciprocity scenario), and a receiving beamcorresponding to a transmitting beam (corresponding to a reciprocityscenario).

Signals transmitted on ports having the QCL relationship may also beunderstood as signals received or transmitted by using a same spatialfilter. The spatial filter may be at least one of the following:precoding, a weight of an antenna port, phase deflection of an antennaport, and an amplitude gain of an antenna port.

Signals transmitted on ports having the QCL relationship may also beunderstood as having a corresponding beam pair link (BPL), where thecorresponding BPL includes at least one of the following: a samedownlink BPL, a same uplink BPL, an uplink BPL corresponding to adownlink BPL, and a downlink BPL corresponding to an uplink BPL.

Optionally, the QCL relationship may have another name, without changingthe technical essence, for example, may also be referred to as a spatialQCL relationship or a reciprocal QCL relationship.

The first resource in this embodiment of the present invention mayinclude at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.

The second resource in this embodiment of the present invention mayinclude at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe UE to transmit information to the base station before the UEtransmits the target channel and/or signal; or the second resource mayinclude at least one of: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port that are used bythe base station to transmit information to the UE before the UEtransmits the target channel and/or signal.

Optionally, the second resource in this embodiment of the presentinvention may be a resource used to transmit at least one of thefollowing channels and/or signals: an SRS, a PRACH, a PUSCH, a PUCCH, anuplink tracking signal, an uplink discovery signal, an uplink beamreference signal, an uplink mobility reference signal, an uplinkdemodulation reference signal, a primary synchronization signal, asecondary synchronization signal, a synchronization signal block, ademodulation reference signal of a physical broadcast channel, a CSI-RS,a tracking reference signal (TRS), a phase tracking reference signal(PT-RS), a demodulation reference signal of a physical downlink controlchannel, and a demodulation reference signal of a physical downlinkshared channel. Optionally, the physical downlink control channel may bea control resource set (CORESET), or may be a physical downlink controlchannel carrying a random access response or control information ofsystem information. Optionally, the physical downlink shared channel maybe a physical downlink shared channel carrying system information.

The following describes the embodiments of the present invention indetail with reference to the accompanying drawings.

FIG. 1 is a simplified schematic diagram of a communications system towhich an embodiment of the present invention may be applied. As shown inFIG. 1, the communications system may include a base station 11 and UE12.

The communications system may be an LTE system, a future system evolvedfrom an LTE system, a Wireless Fidelity (Wi-Fi) system, a WorldwideInteroperability for Microwave Access (WiMAX) system, a 3GPP relatedcellular system, or the like.

The base station 11 may be a wireless communications base station (BS),a base station controller, a transmission reception point (TRP), a gNB,or the like. The base station 11 is an apparatus deployed in a radioaccess network to provide wireless communication functions for the UE12. Main functions of the base station 11 are: performing radio resourcemanagement, compressing an Internet Protocol (IP) header, encrypting adata stream of the user equipment, selecting a mobility managemententity (MME) when the UE 12 is attached, routing use plane data to aserving gateway (SGW), organizing and transmitting a paging message,organizing and transmitting a broadcast message, performing measurementand measurement report configuration for purposes of mobility orscheduling, and the like. The base station 11 may include a macro basestation, a micro base station, a relay station, an access point, and thelike in various forms. In systems using different radio accesstechnologies, a name of a device having the functions of the basestation may vary. For example, the device is referred to as an evolvedNodeB (eNB or eNodeB) in the LTE system, or is referred to as a NodeB ina 3rd generation telecommunications technology (3G) system, or the like.With evolution of communications technologies, the name “base station”may change. In addition, in another possible case, the base station 11may be another apparatus providing the wireless communication functionsfor the UE 12. For ease of description, in this embodiment of thepresent invention, the apparatus providing the wireless communicationfunctions for the UE 12 is referred to as the base station 11.

The UE 12 may include various handheld devices having wirelesscommunication functions (such as a mobile phone, an intelligentterminal, a multimedia device, or a media streaming device), anin-vehicle device, a wearable device, a computing device, or anotherprocessing device connected to a wireless modem, a mobile station (MS)or a terminal device in various forms, and the like. For ease ofdescription, the devices mentioned above are collectively referred to asthe UE 12.

FIG. 2 is a schematic structural diagram of a base station according toan embodiment of the present invention. As shown in FIG. 2, the basestation may include a processor 21, a memory 22, and a transceiver 23.

The following describes each component of the base station in detailwith reference to FIG. 2.

The processor 21 may be one processor, or may be a collective term for aplurality of processing elements. For example, the processor 21 may be ageneral-purpose central processing unit (CPU), an application-specificintegrated circuit (ASIC), or one or more integrated circuits forcontrolling program execution in the solutions of the present invention,for example, one or more digital signal processors (DSPs), or one ormore field programmable gate arrays (FPGA). The processor 21 may performvarious functions of a base station by running or executing a softwareprogram stored in the memory 22 and invoking data stored in the memory22.

In specific implementation, in an embodiment, the processor 21 mayinclude one or more CPUs. For example, as shown in FIG. 2, the processor21 includes a CPU 0 and a CPU 1.

In specific implementation, in an embodiment, the base station mayinclude a plurality of processors. For example, as shown in FIG. 2, thebase station includes the processor 21 and a processor 25. Each of theprocessors may be a single-CPU processor, or may be a multi-CPUprocessor. The processor herein may be one or more devices, circuits,and/or processing cores used for processing data (for example, acomputer program instruction).

The memory 22 may be a read-only memory (ROM) or another type of staticstorage device capable of storing static information and instructions, arandom access memory (RAM) or another type of dynamic storage devicecapable of storing information and instructions, or may be anelectrically erasable programmable read-only memory (EEPROM), a compactdisc read-only memory (CD-ROM), or other compact disc storage or opticaldisc storage (including a compressed optical disc, a laser disc, anoptical disc, a digital versatile disc, a blue-ray optical disc, and thelike), a magnetic disk storage medium or another magnetic storagedevice, or any other medium capable of carrying or storing expectedprogram code in a form of instructions or data structures and capable ofbeing accessed by a computer, but is not limited thereto. The memory mayexist independently, and is connected to the processor by using a bus.The memory may also be integrated with the processor.

The memory 22 is configured to store application program code used toexecute the solutions of the present invention, where the applicationprogram code is executed by the processor 21. The processor 21 isconfigured to execute the application program code stored in the memory22.

The transceiver 23 is configured to communicate with another device or acommunications network, such as an Ethernet, a radio access network(RAN), or a wireless local area network (WLAN). In this embodiment ofthe present invention, the transceiver 23 may include a part or anentirety of a baseband processor, and may further optionally include aradio frequency (RF) processor. The RF processor is configured totransmit and receive RF signals. The baseband processor is configured toimplement processing of a baseband signal converted from an RF signal orprocessing of a baseband signal to be converted into an RF signal.

FIG. 3 is a schematic structural diagram of a UE according to anembodiment of the present invention. As shown in FIG. 3, the UE mayinclude a processor 31, a memory 32, and a transceiver 33.

The following describes each component of the UE in detail withreference to FIG. 3.

The processor 31 may be one processor, or may be a collective term for aplurality of processing elements. For example, the processor 31 may be ageneral-purpose CPU, an ASIC, or one or more integrated circuits forcontrolling program execution in the solutions of the present invention,for example, one or more DSPs, or one or more FPGAs. The processor 31may perform various functions of the terminal by running or executing asoftware program stored in the memory 32 and invoking data stored in thememory 32.

In specific implementation, in an embodiment, the processor 31 mayinclude one or more CPUs. For example, as shown in FIG. 3, the processor31 includes a CPU 0 and a CPU 1.

In specific implementation, in an embodiment, the UE may include aplurality of processors. For example, as shown in FIG. 3, the UEincludes the processor 31 and a processor 35. Each of the processors maybe a single-CPU processor, or may be a multi-CPU processor. Theprocessor herein may be one or more devices, circuits, and/or processingcores used for processing data (for example, a computer programinstruction).

The memory 32 may be a ROM or another type of static storage devicecapable of storing static information and instructions, or a RAM oranother type of dynamic storage device capable of storing informationand instructions, or may be an EEPROM, a CD-ROM, or other compact discstorage or optical disc storage (including a compressed optical disc, alaser disc, an optical disc, a digital versatile disc, a Blu-ray disc,and the like), a magnetic disk storage medium or another magneticstorage device, or any other medium capable of carrying or storingexpected program code in a form of instructions or data structures andcapable of being accessed by a computer, but is not limited thereto. Thememory may exist independently, and is connected to the processor byusing a bus. The memory may also be integrated with the processor.

The transceiver 33 is configured to communicate with another device or acommunications network, such as an Ethernet, an RAN, or a WLAN. Thetransceiver 33 may include a receiving unit for implementing a receivingfunction and a transmitting unit for implementing a transmittingfunction.

A structure of the device shown in FIG. 3 does not constitute alimitation on the UE. A quantity of components included may be greateror less than that shown in the figure, or some components are combined,or component arrangements are different. Although not shown, the UE mayfurther include a battery, a camera, a Bluetooth module, a GPS module, adisplay, and the like. Details are not described herein.

FIG. 4 is a flowchart of an information transmission method according toan embodiment of the present invention. As shown in FIG. 4, the methodmay include the following steps.

401. A base station configures at least one first resource for a UE.

The first resource is used by the UE to transmit a target channel and/orsignal. To implement beamforming on the target channel and/or signal(for example, an SRS), the base station may configure the at least onefirst resource (for example, one or more of a time domain resource, afrequency domain resource, a code domain resource, and an antenna port)for the UE to transmit the target channel and/or signal.

The at least one first resource forms a resource group, and the resourcegroup may include at least one resource subgroup.

Optionally, all first resources in a same resource subgroup may be asame frequency domain resource or a same code domain resource.

Further, optionally, the base station may further configure a specificresource group use manner for the UE. For example, the specific resourcegroup use manner configured for the UE may be: periodically using theconfigured resource group to transmit the target channel and/or signal;or instead of periodically using the configured resource group totransmit the target channel and/or signal, using the configured resourcegroup to transmit the target channel and/or signal after receiving DCItransmitted by the base station; or semi-persistently using theconfigured resource group to transmit the target channel and/or signal.In other words, activation may be triggered by using DCI or MAC CE, anddeactivation may be triggered by using DCI or MAC CE; or activation maybe triggered by using DCI or MAC CE, and deactivation is triggered aftera period of time, where the period of time may be specified by aprotocol (without being configured by the base station or locallyprestored or preconfigured) or may be configured by the base station; oractivation may be triggered after a period of time when configurationinformation is received, and deactivation is triggered by using DCI orMAC CE, or deactivation is triggered after a period of time, where theperiod of time between receiving the configuration information and theactivation may be specified by a protocol (without being configured bythe base station or locally prestored or preconfigured) or may beconfigured by the base station, and the period of time between theactivation and the deactivation may also be specified by the protocol(without being configured by the base station or locally prestored orpreconfigured) or may be configured by the base station.

Further, optionally, the base station may further indicate, to the UE, agrouping manner of the configured resource group, that is, indicate, tothe UE, a grouping manner of dividing the configured resource group intothe at least one resource subgroup.

402. The UE obtains the at least one first resource configured by thebase station for the UE.

403. The base station transmits first indication information to the UE,where the first indication information is used to indicate acorrespondence between the first resource and a beam.

The beam is an uplink transmitting beam, a downlink receiving beam, adownlink transmitting beam, or an uplink receiving beam. Based on theresource group configured by the base station for the UE, the basestation may transmit, to the UE, the first indication information usedto indicate the correspondence between the first resource included inthe resource group and the beam.

404. The UE receives the first indication information transmitted by thebase station.

405. The UE determines an uplink transmitting beam based on the firstresource and the first indication information.

After the UE receives the first indication information transmitted bythe base station, the UE may determine, based on the correspondenceincluded in the first indication information and the first resourceincluded in the configured resource group, a beam required fortransmitting the target channel and/or signal, namely, the uplinktransmitting beam.

For example, when the beam in the correspondence is an uplinktransmitting beam, the UE may directly determine the beam correspondingto the first resource as the uplink transmitting beam; when the beam inthe correspondence is a downlink receiving beam, the UE may first obtainthe downlink receiving beam corresponding to the first resource, andthen determine the uplink transmitting beam based on the downlinkreceiving beam by using a correspondence between uplink and downlinkbeams; or when the beam is a downlink transmitting beam, the UE mayfirst determine, based on the first resource and the correspondencebetween the first resource and the beam, the downlink transmitting beam,then determine a downlink receiving beam based on the downlinktransmitting beam by using a correspondence between uplink and downlinkbeams, and finally determine the uplink transmitting beam based on thedownlink receiving beam by using the correspondence between the uplinkand downlink beams.

406. The UE transmits a target channel and/or signal on the firstresource and on the uplink transmitting beam.

After the UE determines the uplink transmitting beam, the UE maytransmit the target channel and/or signal on the first resource and onthe determined uplink transmitting beam, so as to implement beamformingon the target channel and/or signal.

In the information transmission method provided by this embodiment ofthe present invention, the base station configures the at least onefirst resource used to transmit the target channel and/or signal for theUE, and transmits the first indication information used to indicate thecorrespondence between the first resource and the beam to the UE, sothat the UE can determine, based on the first resource and the firstindication information, a beam required for transmitting the targetchannel and/or signal. Therefore, when the target channel or signal orboth are an SRS, the UE can transmit the SRS by using the determinedbeam required for transmitting the target channel and/or signal, so asto implement beamforming on the SRS.

FIG. 5 is a flowchart of another information transmission methodaccording to an embodiment of the present invention. As shown in FIG. 5,the method may include the following steps.

501. A base station configures at least one first resource for a UE.

The first resource is used by the UE to transmit a target channel and/orsignal, or the first resource is used by the UE to receive a targetchannel and/or signal.

To implement beamforming on the target channel and/or signal (forexample, an SRS), the base station may configure at least one firstresource (for example, one or more of a time domain resource, afrequency domain resource, a code domain resource, and an antenna port)for the UE to transmit the target channel and/or signal.

The at least one first resource forms a resource group, and the resourcegroup may include at least one resource subgroup.

Optionally, all first resources in a same resource subgroup may be asame frequency domain resource or a same code domain resource.

Optionally, the base station may further configure a resource group usemanner for the UE. For example, the use manner may be: periodicallyusing the configured resource group to transmit the target channeland/or signal; or instead of periodically using the configured resourcegroup to transmit the target channel and/or signal, using the configuredresource group to transmit the target channel and/or signal afterreceiving DCI transmitted by the base station; or semi-persistentlyusing the configured resource group to transmit the target channeland/or signal, that is, after receiving DCI or MAC CE transmitted by thebase station, periodically using the configured resource group totransmit the target channel and/or signal, and stopping transmissionafter receiving new DCI or new MAC CE transmitted by the base station.

Optionally, the base station may further indicate, to the UE, a groupingmanner of the configured resource group, that is, indicate, to the UE, agrouping manner of dividing the configured resource group into the atleast one resource subgroup.

502. The UE obtains the at least one first resource configured by thebase station for the UE.

The base station may notify the UE of the first resource by signaling.

503. The base station transmits first indication information to the UE,where the first indication information is used to indicate acorrespondence between the first resource and a second resource.

Before the UE transmits the target channel and/or signal to the basestation, the UE transmits other information to the base station by usingthe second resource and a beam corresponding to the second resource; orbefore the UE transmits the target channel and/or signal to the basestation, the base station transmits other information to the UE by usingthe second resource and a beam corresponding to the second resource. Inother words, a correspondence between the second resource and the beamis known, and on this basis, the base station may transmit, to the UE,the first indication information used to indicate the correspondencebetween the first resource and the second resource, so that the UEdetermines, based on the first indication information, a beam fortransmitting the target channel and/or signal, or determines a beam usedby the base station to receive the target channel and/or signal on thefirst resource.

In order that beamforming can be implemented when the UE transmits thetarget channel and/or signal, the base station indicates, to the UE byusing the first indication information, the correspondence between thefirst resource in the resource group configured for the UE and thesecond resource. The second resource includes at least one of: a timedomain resource, a frequency domain resource, a code domain resource,and an antenna port that are used by the UE to transmit information tothe base station before the UE transmits the target channel and/orsignal; or the second resource includes at least one of: a time domainresource, a frequency domain resource, a code domain resource, and anantenna port that are used by the base station to transmit informationto the UE before the UE transmits the target channel and/or signal.Optionally, the second resource in this embodiment of the presentinvention may be a resource used to transmit at least one of thefollowing channels and/or signals: an SRS, a PRACH, a PUSCH, a PUCCH, anuplink tracking signal, an uplink discovery signal, an uplink beamreference signal, an uplink mobility reference signal, an uplinkdemodulation reference signal, a primary synchronization signal, asecondary synchronization signal, a synchronization signal block, ademodulation reference signal of a physical broadcast channel, a CSI-RS,a tracking reference signal (TRS), a phase tracking reference signal(PT-RS), a demodulation reference signal of a physical downlink controlchannel, and a demodulation reference signal of a physical downlinkshared channel. Optionally, the physical downlink control channel may bea control resource set (CORESET), or may be a physical downlink controlchannel carrying a random access response or control information ofsystem information. Optionally, the physical downlink shared channel maybe a physical downlink shared channel carrying system information.

In other words, the base station may transmit, to the UE, thecorrespondence between the first resource and the second resource thatis known to be in a correspondence to the beam, so that the UEdetermines the required beam.

In specific implementation, the base station may indicate, to the UE, acorrespondence between each first resource in the resource groupconfigured for the UE and a second resource in the following differentmanners. Optionally, in the following implementation, the correspondencebetween the first resource and the second resource includes at least oneof the following: a quasi co-location QCL relationship exists between anantenna port for the target channel and/or signal and an antenna portfor a channel and/or signal transmitted on the second resource; atransmitting beam used for the target channel and/or signal is the sameas a transmitting beam used for a channel and/or signal transmitted onthe second resource; a transmitting beam used for the target channeland/or signal corresponds to a receiving beam used for a channel and/orsignal transmitted on the second resource; and a spatial filter used forthe target channel and/or signal is the same as a spatial filter usedfor a channel and/or signal transmitted on the second resource.

Optionally, a correspondence between an identity of the second resourceand the second resource may be predefined, or may be configured by thebase station. For example, when the second resource is used to transmitan SRS, the identity of the second resource may be an SRI (SRS resourceindicator), or a correspondence between the identity of the secondresource and an SRI or an SRS resource is configured or predefined bythe base station, so that the identity of the second resource maycorrespond to some SRS resources or SRIs, thereby reducing overheads ofa second resource indicator. For another example, when the secondresource is a CSI-RS, the identity of the second resource may be a CRI(CSI-RS resource indicator), or the base station may configure orpredefine a correspondence between the identity of the second resourceand a CRI or a CSI-RS resource or a CRI reported by the user equipment.For example, the identity of the second resource may be a low overheadindicator (LOI), so that the identity of the second resource correspondsto some CSI-RS resources or CRIs, thereby reducing overheads of thesecond resource indicator.

Manner 1: The first indication information includes a correspondencebetween each first resource in the resource subgroup and the secondresource.

The following manner may be used to indicate the correspondence betweeneach first resource in the resource subgroup and the second resource:The first indication information specifically includes an identity ofeach first resource in the resource subgroup, and an identity of asecond resource corresponding to the identity of each first resource; orthe first indication information specifically includes information usedto indicate that a QCL relationship exists between an antenna port for atarget channel and/or signal transmitted on each first resource and anantenna port for a signal on a second resource; or the first indicationinformation specifically includes an identity of a second resourcecorresponding to each first resource.

Optionally, when the first indication information includes the identityof the second resource corresponding to each first resource, the firstindication information may include one or more identities of secondresources. Optionally, a quantity of identities of second resources isthe same as a quantity of first resources. Optionally, thecorrespondence between the first resource and each of the secondresources indicated by the first indication information may bepredefined. For example, each of the second resources indicated by thefirst indication information corresponds to the first resource insequence.

In addition, further, on a basis of the manner 1, the first indicationinformation further includes a correspondence between each firstresource and an optional range of beams.

Manner 2: The first indication information includes a correspondencebetween each resource subgroup and the second resource.

The following manner may be used to indicate the correspondence betweeneach resource subgroup and the second resource: The first indicationinformation specifically includes an identity of each resource subgroup,and an identity of a second resource corresponding to the identity ofeach resource subgroup; or the first indication information specificallyincludes information used to indicate that a QCL relationship existsbetween an antenna port for a signal on each resource subgroup and anantenna port for a signal on a second resource; or the first indicationinformation may specifically include an identity of a second resourcecorresponding to each resource subgroup.

The base station uses the first indication information to indicate thatall first resources in a same resource subgroup correspond to a samesecond resource. In other words, on all the first resources in the sameresource subgroup, the UE needs to transmit target channels and/orsignals by using a same transmitting beam. In this case,correspondingly, a pre-definition or pre-configuration manner may beused so that, on the first resources in the same resource subgroup, thebase station receives the target channels and/or signals by usingdifferent receiving beams.

Manner 3: The first indication information includes a correspondencebetween each resource subgroup and a second-resource group, where thesecond-resource group includes one or more second resources. Thefollowing manner may be used to indicate the correspondence between theresource subgroup and the second-resource group: The first indicationinformation specifically includes an identity of the resource subgroup,and an identity of a second resource in the second-resource groupcorresponding to the identity of the resource subgroup; or the firstindication information specifically includes an identity of the resourcesubgroup, and an identity of the second-resource group corresponding tothe identity of the resource subgroup.

Manner 4: The first indication information includes an identity of asecond resource in a second-resource group corresponding to a resourcesubgroup.

Manner 5: The first indication information includes an identity of asecond-resource group corresponding to the resource group.

Optionally, in the manner 3 to the manner 5, a quantity of secondresources in the second-resource group is the same as a quantity ofresource subgroups in the resource group.

Optionally, in the manner 3 to the manner 5, a correspondence, forexample, a sequential correspondence, between second resources in thesecond-resource group and resource subgroups in the resource group maybe predefined.

Optionally, for example, the second resource is an SRS resource. Foranother example, the second resource is a CSI-RS resource. For anotherexample, the first resource is a port in an SRS resource, afirst-resource subgroup is an SRS resource including one or more SRSports, and a first-resource group is an SRS resource group including oneor more SRS resources.

Optionally, a method for transmitting the first indication informationmay include: configuring, by the base station, a plurality of candidatesecond-resource groups by using higher layer signaling such as RRCsignaling or MAC CE signaling; and then indicating, by the base station,one of the candidate second-resource groups as the second-resource groupby using MAC CE signaling or DCI signaling.

Further optionally, one or more candidate second-resource groups form aset of candidate second-resource groups; the base station configures oneor more sets of candidate second-resource groups by using higher layersignaling such as RRC signaling or MAC CE signaling; then the basestation indicates one of the sets of candidate second-resource groups byusing signaling such as RRC signaling or MAC CE signaling; and then thebase station indicates, by using MAC CE or DCI signaling, a candidatesecond-resource group in the indicated set of candidate second-resourcegroups as the second-resource group.

Further optionally, quantities of second resources in second-resourcegroups included in a same set of candidate second-resource groups arethe same, and quantities of second resources in second-resource groupsincluded in different sets of candidate second-resource groups may bedifferent.

Further optionally, the UE may determine a set of candidatesecond-resource groups based on a quantity of first-resource subgroupsin a first-resource group. For example, a quantity of second resourcesin a second-resource group in the determined set of candidatesecond-resource groups is equal to the quantity of first-resourcesubgroups in the first-resource group. A feasible embodiment is providedin Table 1. The UE determines, based on the quantity of first-resourcesubgroups in the first-resource group, columns in the table. In otherwords, the UE determines a set of candidate second-resource groups. Forexample, if the resource group includes one first-resource subgroup, aset 0 of candidate second-resource groups is selected, where eachsecond-resource group in the set 0 of candidate second-resource groupsincludes one second resource; because the second-resource group includesonly one second resource in this case, a beam indicator may directlyindicate an identity of the second resource. For another example,assuming that the resource group includes two first-resource subgroups,a set 1 of candidate second-resource groups is selected, where eachsecond-resource group in the set 1 of candidate second-resource groupsincludes two second resources. For another example, assuming that theresource group includes four first-resource subgroups, a set 2 ofcandidate second-resource groups is selected, where each second-resourcegroup in the set 2 of candidate second-resource groups includes foursecond resources. This predefined correspondence can ensure that afirst-resource subgroup corresponds to a second resource. In addition,the base station determines rows in the table by using a beam indicatorin a MAC CE or DCI indicator table. For example, if bits in acorresponding field in MAC CE or DCI are “00”, a resource group 0 isselected. It should be noted that, rows and columns in the followingtable are merely examples and may be interchanged, and quantities of therows and/or the columns may also increase or decrease, or may also be apart of another table. A value of a field in the following table is abinary numeral, or may be indicated by a decimal, octal, or hexadecimalnumeral. In the table, a correspondence between an identity of asecond-resource group and a field used to indicate a correspondencebetween a first resource and a second resource, in the MAC CE or theDCI, or a correspondence between an identity of a second resource and afield used to indicate a correspondence between a first resource and asecond resource, in the MAC CE or the DCI, may be reflected in a form ofa list, a formula, a character string, an array, a code segment, or thelike. In the table, a quantity of first-resource subgroups in a firstcolumn may also be another numeric value, and is used merely as anexample herein.

TABLE 1 Field used to indicate a correspondence between a first resourceand a second resource, in the MAC CE or One first-resource Twofirst-resource Four first-resource the DCI subgroup subgroups subgroups00 A second-resource A second-resource A second-resource group 0 in theset 0 of group 0 in the set 1 of group 0 in the set 2 of candidatecandidate candidate second-resource groups, second-resourcesecond-resource groups or an identity 0 of a groups second resource 01 Asecond-resource A second-resource A second-resource group 1 in the set 0of group 1 in the set 1 of group 1 in the set 2 of candidate candidatecandidate second-resource groups, second-resource second-resource groupsor an identity 1 of a groups second resource 10 A second-resource Asecond-resource A second-resource group 2 in the set 0 of group 2 in theset 1 of group 2 in the set 2 of candidate candidate candidatesecond-resource groups, second-resource second-resource groups or anidentity 2 of a groups second resource 11 A second-resource Asecond-resource A second-resource group 3 in the set 0 of group 3 in theset 1 of group 3 in the set 2 of candidate candidate candidatesecond-resource groups, second-resource second-resource groups or anidentity 3 of a groups second resource

Further, assuming that the second resource is an SRS resource or aCSI-RS resource, and that the first-resource subgroup is an SRSresource, Table 1 may be changed into the following Table 2. An identityof the SRS/CSI-RS resource may be an SRI or a CRI, or the base stationmay configure or predefine a correspondence between the SRI or CRI andthe identity of the SRS/CSI-RS resource.

A value of a field in the following table is a binary numeral, or may beindicated by a decimal, octal, or hexadecimal numeral. In the table, acorrespondence between an identity of an SRS/CSI-RS resource group and afield used to indicate a correspondence between an SRS resource and anSRS/CSI-RS resource, in the MAC CE or the DCI, or a correspondencebetween an identity of an SRS/CSI-RS resource and a field used toindicate a correspondence between an SRS resource and an SRS/CSI-RSresource, in the MAC CE or the DCI, may be reflected in a form of alist, a formula, a character string, an array, a code segment, or thelike. In the table, a quantity of SRS resources in a first column mayalso be another numeric value, and is used merely as an example herein.

TABLE 2 Field used to indicate a correspondence between an SRS resourceand an SRS/CSI-RS resource, in the An SRS resource An SRS resource AnSRS resource MAC CE or group includes one group includes two groupincludes four the DCI SRS resource SRS resources SRS resources 00 AnSRS/CSI-RS An SRS/CSI-RS An SRS/CSI-RS resource group 0 in a resourcegroup 0 in a resource group 0 in a set 0 of SRS/CSI-RS set 1 ofSRS/CSI-RS set 2 of SRS/CSI-RS resource groups, or an resource groupsresource groups identity 0 of an SRS/CSI-RS resource 01 An SRS/CSI-RS AnSRS/CSI-RS An SRS/CSI-RS resource group 1 in a resource group 1 in aresource group 1 in a set 0 of SRS/CSI-RS set 1 of SRS/CSI-RS set 2 ofSRS/CSI-RS resource groups, or an resource groups resource groupsidentity 1 of an SRS/CSI-RS resource 10 An SRS/CSI-RS An SRS/CSI-RS AnSRS/CSI-RS resource group 2 in a resource group 2 in a resource group 2in a set 0 of SRS/CSI-RS set 1 of SRS/CSI-RS set 2 of SRS/CSI-RSresource groups, or an resource groups resource groups identity 2 of anSRS/CSI-RS resource 11 An SRS/CSI-RS An SRS/CSI-RS An SRS/CSI-RSresource group 3 in a resource group 3 in a resource group 3 in a set 0of SRS/CSI-RS set 1 of SRS/CSI-RS set 2 of SRS/CSI-RS resource groups,or an resource groups resource groups identity 3 of an SRS/CSI-RSresource

In addition, further, on a basis of the manner 2 to the manner 5, thefirst indication information further includes a correspondence betweeneach resource subgroup and an optional range of beams.

Manner 6: The first indication information includes a correspondencebetween each first resource and the second resource.

The following manner may be used to indicate the correspondence betweeneach first resource and the second resource: The first indicationinformation specifically includes an identity of each first resource,and an identity of a second resource corresponding to the identity ofeach first resource; or the first indication information specificallyincludes information used to indicate that a QCL relationship existsbetween an antenna port for a signal on each first resource and anantenna port for a signal on a second resource; or the first indicationinformation includes an identity of a second resource corresponding to afirst resource.

Manner 7: The first indication information includes a correspondencebetween each first resource and a second-resource group, where thesecond-resource group includes at least one second resource.

The following manner may be used to indicate the correspondence betweeneach first resource and the second-resource group: The first indicationinformation specifically includes an identity of each first resource,and an identity of each second resource in a second-resource groupcorresponding to the identity of each first resource; or the firstindication information specifically includes an identity of each firstresource, and an identity of a second-resource group corresponding tothe identity of each first resource; or the first indication informationspecifically includes information used to indicate that a QCLrelationship exists between an antenna port for a signal on each firstresource and an antenna port for a signal on a second-resource group; orthe first indication information specifically includes an identity of asecond-resource group corresponding to the first resource.

Manner 8: The first indication information includes a correspondencebetween each first resource and an optional range of beams.

Optionally, in the foregoing manners 1 to 8, the first indicationinformation may be carried in same signaling or may be carried indifferent signaling. For example, when the first indication informationis carried in different signaling, the identity of the first resource orthe identity of the first-resource subgroup may be carried in signaling1, and information other than the identity of the first resource and theidentity of the first-resource subgroup in the first indicationinformation in the foregoing implementations may be carried in signaling2. For another example, when the first signaling is carried in DCI, theDCI may not include the identity of the first resource or the identityof the first-resource subgroup or the identity of the first-resourcegroup; or when the first signaling is carried in the MAC CE, first MACCE may include the identity of the first resource or the identity of thefirst-resource subgroup or the identity of the first-resource group, andthe identity of the corresponding second resource or the identity of thesecond-resource group. Optionally, in the foregoing implementations 1 to8, the first indication information may be further used to indicate thatthe user equipment itself selects a transmitting beam for the targetchannel and/or signal, or a signal having a QCL relationship with thetarget channel and/or signal.

Optionally, in the foregoing implementations 1 to 8, the firstindication information may be further used to indicate that a previouslyused k^(th) transmitting beam is used for the target channel and/orsignal or that the first resource corresponds to a second resourceindicated previously at a k^(th) time, where k may be configured orpredefined by the base station, for example, k=1 or k=2. For example,the field used to indicate the correspondence between the first resourceand the second resource, in the MAC CE or the DCI in Table 1 in themanner 5, may be further used to indicate that a previously used k^(th)transmitting beam is used for the target channel and/or signal or thatthe second resource is a second resource indicated previously at ak^(th) time; or the field used to indicate the correspondence betweenthe SRS resource and the SRS/CSI-RS resource, in the MAC CE or the DCIin Table 2 in the manner 5, may be further used to indicate that apreviously used k^(th) transmitting beam is used for the target channeland/or signal or that the SRS/CSI-RS resource is an SRS/CSI-RS resourceindicated previously at a k^(th) time.

Optionally, in the foregoing implementations 1 to 8, the firstindication information may be further used to indicate that atransmitting beam used for the target channel and/or signal isdetermined by the UE itself, or that an antenna port having a QCLrelationship with the antenna port used for the target channel and/orsignal is not limited. For example, the field used to indicate thecorrespondence between the first resource and the second resource, inthe MAC CE or the DCI in Table 1 in the manner 5, may be further used toindicate that a transmitting beam used for the target channel and/orsignal is determined by the UE itself, or that an antenna port having aQCL relationship with the antenna port used for the target channeland/or signal is not limited; or the field used to indicate thecorrespondence between the SRS resource and the SRS/CSI-RS resource, inthe MAC CE or the DCI in Table 2 in the manner 5, may be further used toindicate that a transmitting beam used for the target channel and/orsignal is determined by the UE itself, or that an antenna port having aQCL relationship with the antenna port used for the SRS is not limited.

Optionally, in the foregoing implementations 1 to 8, the base stationmay transmit third indication information used to indicate whether thefirst indication information exists, or whether the first indicationinformation includes the identity of the second resource or the identityof the second-resource group, so as to reduce signaling overheads whenthere is no need to indicate the beam.

Optionally, in the foregoing implementations 1 to 8, a time domainspacing between the second resource and a third resource or the firstresource is predefined or configured by the base station. The thirdresource is some or all of resources for transmitting the firstindication information.

For example, the first indication information is carried in RRCsignaling or MAC CE signaling, or the identity of the second resource orthe identity of the second-resource group in the first indicationinformation is carried in RRC signaling or MAC CE signaling; in thiscase, the third resource may be a timeslot or a subframe or a symbol ora mini-timeslot in which a PDSCH carrying the RRC signaling or the MACCE signaling is located. A timeslot is used as an example in thisembodiment. For another example, the first indication information iscarried in DCI, or the identity of the second resource or the identityof the second-resource group in the first indication information iscarried in DCI; in this case, the third resource may be a timeslot or asubframe or a symbol or a mini-timeslot in which a PDCCH carrying theDCI is located. A timeslot is used as an example in this embodiment.

Optionally, if the second resource carries an aperiodic signal, such asan aperiodic SRS or an aperiodic CSI-RS, the predefined second resourceis a resource for transmitting the aperiodic signal, and a time domainspacing between the second resource and the third resource or the firstresource is a spacing between a timeslot in which the aperiodic signalis located and a timeslot of the third resource or the first resource.

Optionally, if the second resource carries a periodic signal or asemi-persistent signal, such as a periodic or semi-persistent SRS orCSI-RS, the base station may configure different beams by usingsignaling in a process of transmitting the signal periodically.Therefore, the second resource needs to be defined as a resourceoccupied at a specific time of transmitting the corresponding signal tobe transmitted periodically.

Specifically, the first indication information is used to indicate aresource indicator for a second signal transmitted on the secondresource. For example, the second signal is an SRS or a CSI-RS, and theresource indicator for the second signal is an SRI or a CRI or anidentity thereof. The second resource may be included in thesecond-resource group, and the indication method may be the indicationmethod in the foregoing manners 1 to 8. The time domain spacing betweenthe second resource and the third resource or the first resource ispredefined or configured by the base station in the followingimplementation methods.

Implementation method 1: The second resource may be a resource for asecond signal transmitted at an a2^(th)-to-last time before a1 timeslotsbefore the third resource. For example, if the third resource is atimeslot n or a timeslot in which the third resource is located is atimeslot n, the second resource is a resource for a second signaltransmitted at an a2^(th)-to-last time before n−a1 timeslots, as shownin FIG. 5-1. a1 may be configured or predefined by the base station, forexample, a1=0 or a1=1. a2 may also be configured or predefined by thebase station, for example, a2=1. a1 may be a positive value, a negativevalue, or 0, where a1=0 may also be understood as “a1 is undefined”,that is, the second resource may be a resource for a second signaltransmitted at an a2^(th)-to-last time before the third resource.

Implementation method 2: The second resource may be a resource for asecond signal that is on an a2^(th)-to-last beam different from that ofthe third resource or has a non-QCL relationship with a signal on thethird resource, before a1 timeslots before the third resource. Forexample, if the third resource is a timeslot n or a timeslot in whichthe third resource is located is a timeslot n, the second resource is aresource for a second signal that is on an a2^(th)-to-last beamdifferent from that of the third resource or has a non-QCL relationshipwith a signal on the third resource, before n−a1 timeslots, as shown inFIG. 5-2. Different beams may be further understood as different spatialfilters, or having a non-QCL relationship. a1 may be configured orpredefined by the base station, for example, a1=0 or a1=1. a2 may alsobe configured or predefined by the base station, for example, a2=1. a1may be a positive value, a negative value, or 0, where a1=0 may also beunderstood as “a1 is undefined”, that is, the second resource may be aresource for a second signal on an a2^(th)-to-last different beam beforethe third resource. In comparison with the implementation method 1, inthe implementation method 2, a plurality of a2 values may correspond toa same beam. Therefore, overheads of an a2 indication can be reduced.

Implementation method 3: The second resource may be a resource for asecond signal transmitted at an a2^(th)-to-last time before a1 timeslotsbefore the first resource. For example, if a timeslot in which the firstresource is located is a timeslot n, the second resource is a resourcefor a second signal transmitted at an a2^(th)-to-last time before n−a1timeslots, as shown in FIG. 5-3. a1 may be configured or predefined bythe base station, for example, a1=0 or a1=1. a2 may also be configuredor predefined by the base station, for example, a2=1. a1 may be apositive value, a negative value, or 0, where a1=0 may also beunderstood as “a1 is undefined”, that is, the second resource may be aresource for a second signal transmitted at an a2^(th)-to-last timebefore the first resource.

Implementation method 4: The second resource may be a resource for asecond signal that is on an a2^(th)-to-last beam different from that ofthe first resource, before a1 timeslots before the first resource. Forexample, if a timeslot in which the first resource is located is atimeslot n, the second resource is a resource for a second signal thatis on an a2^(th)-to-last beam different from that of the first resourceor has a non-QCL relationship with the signal on the first resource,before n−a1 timeslots, as shown in FIG. 5-4. Different beams may befurther understood as different spatial filters, or having a non-QCLrelationship. a1 may be configured or predefined by the base station,for example, a1=0 or a1=1. a2 may also be configured or predefined bythe base station, for example, a2=1. a1 may be a positive value, anegative value, or 0, where a1=0 may also be understood as “a1 isundefined”, that is, the second resource may be a resource for a secondsignal on an a2^(th)-to-last different beam before the first resource.In comparison with the implementation method 3, in the implementationmethod 4, a plurality of a2 values may correspond to a same beam.Therefore, overheads of an a2 indication can be reduced.

Optionally, in the foregoing implementations 1 to 8, a time domainspacing between the first resource and a third resource or the secondresource is predefined or configured by the base station. The thirdresource is some or all of resources for transmitting the firstindication information. For example, the first indication information iscarried in RRC signaling or MAC CE signaling, or the identity of thesecond resource or the identity of the second-resource group in thefirst indication information is carried in RRC signaling or MAC CEsignaling; in this case, the third resource may be a timeslot or asubframe or a symbol or a mini-timeslot in which a PDSCH carrying theRRC signaling or the MAC CE signaling is located. A timeslot is used asan example in this embodiment. For another example, the first indicationinformation is carried in DCI, or the identity of the second resource orthe identity of the second-resource group in the first indicationinformation is carried in DCI; in this case, the third resource may be atimeslot or a subframe or a symbol or a mini-timeslot in which a PDCCHcarrying the DCI is located. A timeslot is used as an example in thisembodiment.

Optionally, if the first resource carries an aperiodic target channeland/or signal, such as an aperiodic SRS or an aperiodic CSI-RS, thepredefined first resource is a resource for transmitting the aperiodictarget channel and/or signal, and a time domain spacing between thefirst resource and the third resource or the second resource is aspacing between a timeslot in which the aperiodic target channel and/orsignal is located and a timeslot of the third resource or the secondresource.

Optionally, if the first resource carries a periodic signal or asemi-persistent target channel and/or signal, such as a periodic orsemi-persistent SRS or CSI-RS, considering that there is an effectivedelay or a fuzzy time for the first indication information, a specificeffective time of the first indication information needs to bespecified.

Specifically, the first indication information is used to indicate thesecond resource corresponding to the first resource or thecorrespondence between the first resource and the second resource. Forexample, the target channel or signal or both are an SRS. The firstresource may be included in the first-resource group or thefirst-resource subgroup, and the indication method may be the indicationmethod in the foregoing manners 1 to 8. The time domain spacing betweenthe first resource and the third resource or the second resource ispredefined or configured by the base station in the followingimplementation methods.

Implementation method 1: The first resource may be a resource for thetarget channel and/or signal transmitted at a b2^(th) time after b1timeslots after the third resource, or the first indication informationstarts to take effect when the target channel and/or signal istransmitted at a b2^(th) time after b1 timeslots after the thirdresource. For example, if the third resource is a timeslot n or atimeslot in which the third resource is located is a timeslot n, thefirst resource is a resource for the target channel and/or signaltransmitted at a b2^(th) time after n+b1 timeslots, or the firstindication information takes effect when the target channel and/orsignal is transmitted at a b2^(th) time after n+b1 timeslots, as shownin FIG. 5-5. b1 may be configured or predefined by the base station, forexample, b1=0 or b1=1. b2 may also be configured or predefined by thebase station, for example, b2=1. b1=0 may also be understood as “b1 isundefined”, that is, the first resource may be a resource for the targetchannel and/or signal transmitted at a b2^(th) time after the thirdresource, or the first indication information starts to take effect whenthe target channel and/or signal is transmitted at a b2^(th) time afterthe third resource.

Implementation method 2: The first resource may be a resource for thetarget channel and/or signal transmitted at a b2^(th) time after b1timeslots after the second resource, or the first indication informationstarts to take effect when the target channel and/or signal istransmitted at a b2^(th) time after b1 timeslots after the secondresource. For example, if the second resource is a timeslot n or atimeslot in which the second resource is located is a timeslot n, thefirst resource is a resource for the target channel and/or signaltransmitted at a b2^(th) time after n+b1 timeslots, or the firstindication information takes effect when the target channel and/orsignal is transmitted at a b2^(th) time after n+b1 timeslots, as shownin FIG. 5-6. b1 may be configured or predefined by the base station, forexample, b1=0 or b1=1. b2 may also be configured or predefined by thebase station, for example, b2=1. b1=0 may also be understood as “b1 isundefined”, that is, the first resource may be a resource for the targetchannel and/or signal transmitted at a b2^(th) time after the secondresource, or the first indication information starts to take effect whenthe target channel and/or signal is transmitted at a b2^(th) time afterthe second resource.

In another implementation method of this embodiment, information used toindicate the second resource or the second-resource group in the firstindication information may be carried in first DCI. The first DCI may beused to trigger transmission of the target channel and/or signal on morethan one frequency domain resource part. The frequency domain resourcepart may be a carrier or a bandwidth part (BWP). The BWP may be abandwidth configured by the base station for the UE, and has a uniquesubcarrier spacing and CP type, and may be used to transmit data. Inthis embodiment, for example, the target channel or signal or both arean SRS. In this case, the first resource or the first-resource subgroupor the first-resource group includes a plurality of frequency domainresource parts. It may be understood that each first resource is locatedin a frequency domain resource part, or that each first-resourcesubgroup is located in a frequency domain resource part, or that thefirst resource is located in a plurality of frequency domain resourceparts. Some of the frequency domain resource parts are frequency domainresource parts in which PUSCH transmission is not performed or PUSCHtransmission and PUCCH transmission are not performed. In this case, thefirst indication information is used to indicate beams or correspondingsecond resources or second-resource groups on a plurality of frequencydomain resource parts.

Specifically, the first DCI includes one or more blocks. For example,the first DCI may include a block 1, a block 2, . . . , a block C, whereC is a positive integer. One or more of the C blocks in the first DCImay be used to carry the information that is used to indicate the secondresource or the second-resource group in the first indicationinformation. Optionally, if the C blocks are some bits in the first DCI,another block or more blocks in the first DCI may be used to carry firstindication information of other UE. In this case, the first DCI is usedto indicate SRS transmission of different user equipments. In this case,one of the C blocks in the first DCI is used to indicate b1 secondresources and b2 transmission power control (TPC,) parameters, whereb1>1, and b2>1. For example, one of the C blocks in the first DCIincludes identities of b1 second resources, or includes an identity ofone or more second-resource groups of b1 second resources. Specifically,a quantity of bits and specific meanings of one (for example, may be ablock in the first DCI) of the C blocks in the first DCI have thefollowing manners:

Manner 1: b2 is determined based on b1, a quantity of carriers, and aquantity of BWPs in each carrier. For example, b2=b1*Quantity ofcarriers*Quantity of BWPs in each carrier. In this case, acorrespondence between b1 second resources and b2 TPCs may be configuredby using higher layer signaling such as RRC signaling or MAC CEsignaling. For example, TPCs are sorted and classified into b1 groups,and each group corresponds, for example, sequentially corresponds, toone second resource. Therefore, a TPC is determined for each resourceand each beam, and adjustment of closed-loop power control is performed.In this case, C=1.

In this manner, each block corresponds to one user equipment, andincludes the following bits for the user equipment:

(1) ┌log 2(b1)┐ bits, where ┌⋅┐ indicates round-up, and the base stationindicates, by using the ┌log 2(b1)┐ bits in a block of the first DCI, anidentity of a second resource or an identity of one or moresecond-resource groups of second resources used by the user equipment ina BWP in a carrier corresponding to the block.

(2) ┌log 2(b2)┐ bits, where ┌⋅┐ indicates round-up, the base stationindicates a power control command of the user equipment by using the┌log 2(b2)┐ bits in a block of the first DCI, and the power controlcommand may be a TPC. A correspondence between b1 second resources andb2 TPCs may be configured by using higher layer signaling such as RRCsignaling or MAC CE signaling, or predefined.

Manner 2: b2 is determined based on b1. For example, b2=b1. In thiscase, a correspondence between b1 second resources and b2 TPCs may beconfigured by using higher layer signaling such as RRC signaling or MACCE signaling, or predefined. For example, a one-to-one correspondenceexists between the sorted TPCs and the indicated and sorted secondresources. Therefore, a TPC is determined for each beam, and adjustmentof closed-loop power control is performed. Further, in this case, C>1.Each of the C blocks in the first DCI corresponds to a BWP in a carrier.For example, C may be determined based on a quantity of carriers and aquantity of BWPs in each carrier. For example, C=Quantity ofcarriers*Quantity of BWPs in each carrier.

In this manner, each block corresponds to a BWP in a carrier, andincludes the following bits for a BWP in the carrier:

(1) ┌log 2(b1)┐ bits, where ┌⋅┐ indicates round-up, and the base stationindicates, by using the ┌log 2(b1)┐ bits in a block of the first DCI, anidentity of a second resource or an identity of one or moresecond-resource groups of second resources used by the user equipment ina BWP in the carrier.

(2) ┌log 2(b2)┐ bits, where ┌⋅┐ indicates round-up, the base stationindicates a power control command of the user equipment in a BWP in thecarrier by using the ┌log 2(b2)┐ bits in a block of the first DCI, andthe power control command may be a TPC. A correspondence between b1second resources and b2 TPCs may be configured by using higher layersignaling such as RRC signaling or MAC CE signaling, or predefined.

In this case, the user equipment may correspond to one or more blocks.In other words, the base station may indicate, by using one or moreblocks in the first DCI, an identity of a second resource or an identityof one or more second-resource groups of second resources used by theuser equipment.

Manner 3: b2 is determined based on b1 and a quantity of carriers, or isdetermined based on b1 and a quantity of BWPs. For example,b2=b1*Quantity of carriers, or b2=b1*Quantity of BWPs. In this case, acorrespondence between b1 second resources and b2 TPCs may be configuredby using higher layer signaling such as RRC signaling or MAC CEsignaling. For example, TPCs are sorted and classified into b1 groups,and each group corresponds, for example, sequentially corresponds, toone second resource. Therefore, a TPC is determined for each resourceand each beam, and adjustment of closed-loop power control is performed.In this case, C=1.

In this manner, each block corresponds to one user equipment, andincludes the following bits for the user equipment:

(1) ┌log 2(b1)┐ bits, where ┌⋅┐ indicates round-up, and the base stationindicates, by using the ┌log 2(b1)┐ bits in a block of the first DCI, anidentity of a second resource or an identity of one or moresecond-resource groups of second resources used by the user equipment ina carrier or a BWP corresponding to the block.

(2) ┌log 2(b2)┐ bits, where ┌⋅┐ indicates round-up, the base stationindicates a power control command of the user equipment by using the┌log 2(b2)┐ bits in a block of the first DCI, and the power controlcommand may be a TPC. A correspondence between b1 second resources andb2 TPCs may be configured by using higher layer signaling such as RRCsignaling or MAC CE signaling, or predefined.

Manner 4: b2 is determined based on b1. For example, b2=b1. In thiscase, a correspondence between b1 second resources and b2 TPCs may beconfigured by using higher layer signaling such as RRC signaling or MACCE signaling, or predefined. For example, a one-to-one correspondenceexists between the sorted TPCs and the indicated and sorted secondresources. Therefore, a TPC is determined for each beam, and adjustmentof closed-loop power control is performed. Further, in this case, C>1.Each of the C blocks in the first DCI corresponds to a BP in a carrier.For example, C may be determined based on a quantity of carriers or aquantity of BWPs. For example, C=Quantity of carriers, or C=Quantity ofBWPs.

In this manner, each block corresponds to a carrier or a BWP, andincludes the following bits for the carrier or the BWP:

(1) ┌log 2(b1)┐ bits, where ┌⋅┐ indicates round-up, and the base stationindicates, by using the ┌log 2(b1)┐ bits in a block of the first DCI, anidentity of a second resource or an identity of one or moresecond-resource groups of second resources used by the user equipment inthe carrier or the BWP.

(2) ┌log 2(b2)┐ bits, where ┌⋅┐ indicates round-up, the base stationindicates a power control command of the user equipment for the carrieror the BWP by using the ┌log 2(b2)┐ bits in a block of the first DCI,and the power control command may be a TPC. A correspondence between b1second resources and b2 TPCs may be configured by using higher layersignaling such as RRC signaling or MAC CE signaling, or predefined.

In this case, the user equipment may correspond to one or more blocks.In other words, the base station may indicate, by using one or moreblocks in the first DCI, an identity of a second resource or an identityof one or more second-resource groups of second resources used by theuser equipment.

Optionally, the user equipment determines, based on b1, the quantity ofcarriers, and the quantity of BWPs in each carrier, to use theimplementation method 1 or the implementation method 2. For example,when a product of multiplying b1, the quantity of carriers, and thequantity of BWPs in each carrier is greater than L or greater than orequal to L, the implementation method 1 is used; otherwise theimplementation method 2 is used. L is preset, or specified by aprotocol, or configured by the base station. For example, the basestation may configure a value of L by using RRC signaling.

Optionally, the user equipment determines, based on b1 and the quantityof carriers, to use the implementation method 3 or the implementationmethod 4. Alternatively, the user equipment determines, based on b1 andthe quantity of BWPs, to use the implementation method 3 or theimplementation method 4. For example, when a product of multiplying b1and the quantity of carriers is greater than L or greater than or equalto L, the implementation method 3 is used; otherwise the implementationmethod 4 is used. Alternatively, for example, when a product ofmultiplying b1 and the quantity of BWPs is greater than L or greaterthan or equal to L, the implementation method 3 is used; otherwise theimplementation method 4 is used. L is preset, or specified by aprotocol, or configured by the base station. For example, the basestation may configure a value of L by using RRC signaling.

Optionally, in the foregoing implementation method, it is predefined orindicated by the base station that different BWPs in a same carriercorrespond to a same second resource or second-resource group.

Optionally, in the foregoing implementation method, the carrier is acomponent carrier (CC).

Optionally, in the foregoing implementation method, the C blocks in thefirst DCI may further include information used to trigger SRStransmission. For example, one of the C blocks in the first DCI includesSRS trigger signaling, and the SRS trigger signaling may be used totrigger SRS transmission that is configured by the base station by usinghigher layer signaling such as RRC signaling or MAC CE signaling.

In an extension of the present invention, the information transmissionmethod may be further extended to a downlink direction. In this case,the base station transmits a target channel and/or signal to the UE, anda first resource is a downlink transmission resource. In this case, thetarget channel and/or signal may be at least one of the following: aprimary synchronization signal, a secondary synchronization signal, asynchronization signal block, a physical broadcast channel, a CSI-RS, atracking reference signal (TRS), a phase tracking reference signal(PT-RS), a demodulation reference signal (DMRS), a physical downlinkcontrol channel, a physical downlink shared channel, and a controlresource set CORESET.

When the foregoing information transmission method is used for downlinktransmission of the target channel and/or signal, the base stationtransmits first indication information to the UE, where the firstindication information is used to indicate a correspondence between thefirst resource and a second resource.

Before the base station transmits the target channel and/or signal tothe UE, the UE transmits other information to the base station by usingthe second resource and a corresponding beam; or before the base stationtransmits the target channel and/or signal to the UE, the base stationtransmits other information to the UE by using the second resource and acorresponding beam, and the UE receives, by using a correspondingreceiving beam, a signal transmitted on the second resource. In otherwords, the UE already knows a correspondence between the second resourceand the receiving beam, and on this basis, the base station maytransmit, to the UE, the first indication information used to indicatethe correspondence between the first resource and the second resource,so that the UE determines, based on the first indication information, abeam required by the UE for receiving the target channel and/or signalon the first resource, or determines a beam used by the base station totransmit the target channel and/or signal on the first resource. Forexample, the UE determines, based on the first indication information,that the beam required by the UE for receiving the target channel and/orsignal on the first resource is the receiving beam on which the UEreceives the signal transmitted on the second resource, or the UEdetermines, based on the first indication information, that a QCLrelationship exists between an antenna port for transmitting the targetchannel and/or signal and an antenna port for transmitting the signal onthe second resource. Specifically, the method for transmitting the firstindication information may be any one or a combination of the foregoingmanners.

Optionally, in the foregoing implementation, the first indicationinformation may be further used to indicate that a previously usedk^(th) receiving beam is used for the target channel and/or signal orthat the first resource corresponds to a second resource indicatedpreviously at a k^(th) time, where k may be configured or predefined bythe base station, for example, k=1 or k=2. For example, the field usedto indicate the correspondence between the first resource and the secondresource, in the MAC CE or the DCI in Table 1 in the manner 5, may befurther used to indicate that a previously used k^(th) receiving beam isused for the target channel and/or signal or that the second resource isa second resource indicated previously at a k^(th) time.

Optionally, in the foregoing implementation, the first indicationinformation may be further used to indicate that a receiving beam usedfor the target channel and/or signal is determined by the UE itself, orthat an antenna port having a QCL relationship with the antenna portused for the target channel and/or signal is not limited. For example,the field used to indicate the correspondence between the first resourceand the second resource, in the MAC CE or the DCI in Table 1 in themanner 5, may be further used to indicate that the receiving beam usedfor the target channel and/or signal is determined by the UE itself, orthat an antenna port having a QCL relationship with the antenna portused for the target channel and/or signal is not limited.

504. The UE receives the first indication information transmitted by thebase station.

505. The UE determines the second resource based on the first resourceand the first indication information, and determines an uplinktransmitting beam or a downlink receiving beam based on a beamcorresponding to the second resource.

Optionally, the determining an uplink transmitting beam based on a beamcorresponding to the second resource may be further: determining anuplink receiving beam. For example, an uplink receiving beam used fortransmitting a channel and/or signal on the second resource may bedetermined as an uplink receiving beam for the target channel and/orsignal, or an uplink receiving beam used for transmitting a channeland/or signal on the second resource is determined, based on a QCLrelationship between an antenna port used for transmitting the channeland/or signal on the second resource and the antenna port used for thetarget channel and/or signal, as an uplink receiving beam for the targetchannel and/or signal. For another example, a spatial filter used fordownlink transmission of a channel and/or signal on the second resourcemay be determined as a spatial filter used for uplink reception of thetarget channel and/or signal, or an uplink receiving beam correspondingto a downlink transmitting beam used for downlink transmission of achannel and/or signal on the second resource may be determined as anuplink receiving beam for the target channel and/or signal; or based ona QCL relationship between an antenna port used for transmitting achannel and/or signal on the second resource and the antenna port usedfor the target channel and/or signal, a spatial filter used for downlinktransmission of a channel and/or signal on the second resource may bedetermined as a spatial filter used for uplink reception of the targetchannel and/or signal, or an uplink receiving beam corresponding to adownlink transmitting beam used for downlink transmission of a channeland/or signal on the second resource is determined as an uplinkreceiving beam for the target channel and/or signal.

After the UE receives the first indication information transmitted bythe base station, the UE may first determine, based on thecorrespondence included in the first indication information and thefirst resource included in the configured resource group, the secondresource corresponding to the first resource, and then determine, basedon the known correspondence between the second resource and the beam,the beam corresponding to the second resource, and then determine, basedon the beam corresponding to the second resource, the uplinktransmitting beam or the uplink receiving beam for the target channeland/or signal.

For example, when the UE transmits other information on the secondresource and the corresponding beam, the correspondence between thesecond resource and the uplink transmitting beam is known, and in thiscase, the beam corresponding to the second resource may be directlydetermined as the uplink transmitting beam for the target channel and/orsignal, or the receiving beam corresponding to the second resource isdirectly determined as the uplink receiving beam for the target channeland/or signal. When the base station transmits other information on thesecond resource and the corresponding beam, the correspondence betweenthe second resource and the downlink receiving beam is known, and inthis case, the uplink transmitting beam for the target channel and/orsignal may be determined based on the beam corresponding to the secondresource by using the correspondence between the uplink and downlinkbeams. Optionally, the beam may also be a spatial filter, or a QCLrelationship exists between the antenna port for the signal transmittedon the second resource and the antenna port for the target channeland/or signal.

Optionally, in another implementation solution, in the foregoing stepand embodiment, if there is no corresponding first signaling indicatingthe correspondence between the first resource and the second resource,it is predefined that a correspondence exists between the first resourceand a resource occupied for transmitting a target channel and/or signalbefore the first resource. For example, a beam or a spatial filter fortransmitting a target channel and/or signal at a previous time is usedto transmit the target channel and/or signal at this time, or forexample, a QCL relationship exists between the antenna port for thetarget channel and/or signal and an antenna port for transmitting achannel and/or signal at a previous time. Optionally, if there is nocorresponding first signaling indicating the correspondence between thefirst resource and the second resource, it is predefined that the userequipment itself determines a transmitting beam used for the targetchannel and/or signal, or a signal having a QCL relationship with thetarget channel and/or signal. Optionally, if there is no correspondingfirst signaling indicating the correspondence between the first resourceand the second resource, and the target channel and/or signal istransmitted for the first time, it is predefined that the user equipmentitself determines a transmitting beam used for the target channel and/orsignal, or a signal having a QCL relationship with the target channeland/or signal, or that a signal having a QCL relationship with thetarget channel and/or signal is not limited.

Optionally, if the first indication information is used to indicate thata previously used k^(th) transmitting beam is used for the targetchannel and/or signal or that the first resource corresponds to a secondresource indicated previously at a k^(th) time, where k may beconfigured or predefined by the base station, for example, k=1 or k=2,the UE uses the previously used k^(th) transmitting beam, or determines,based on a correspondence between the first resource and the secondresource indicated previously at the k^(th) time, an uplink transmittingbeam or a receiving beam, or determines, based on a correspondencebetween the first resource and the second resource indicated previouslyat the k^(th) time, that a QCL relationship exists between the antennaport used for the target channel and/or signal and the antenna port usedfor the signal transmitted on the second resource. Specifically, themethod for determining the transmitting beam or the receiving beam orthe QCL relationship in this embodiment of the present invention may beused.

Optionally, if the first indication information is used to indicate thatthe transmitting beam used for the target channel and/or signal isdetermined by the UE itself, or that the antenna port having a QCLrelationship with the antenna port used for the target channel and/orsignal is not limited, the UE itself determines the transmitting beamfor the target channel and/or signal, or the antenna port having a QCLrelationship with the antenna port used for the target channel and/orsignal is not limited.

Optionally, in the foregoing step or embodiment, if the UE transmits athird channel and/or signal on some or all of symbols occupied by thetarget channel and/or signal, the UE needs to determine whether atransmitting beam or a receiving beam for the third channel and/orsignal is the same as that for the target channel and/or signal, or theUE needs to determine whether a QCL relationship exists between anantenna port for the third channel and/or signal and the antenna portfor the target channel and/or signal. Optionally, the method forindicating the target channel and/or signal in the present invention maybe used to indicate the third channel and/or signal, for example,indicate a correspondence between the third channel and/or signal and afourth resource, or indicate a correspondence between the third channeland/or signal and a beam or a spatial filter or whether a QCLrelationship exists between the port for the third channel and/or signaland a port for a signal transmitted on a fourth resource. In this case,the UE may determine, based on whether the second resource is the sameas the fourth resource, whether the transmitting beam or the receivingbeam for the third channel and/or signal is the same as that for thetarget channel and/or signal, where the beam may be a spatial filter, orthe UE needs to determine whether a QCL relationship exists between theantenna port for the third channel and/or signal and the antenna portfor the target channel and/or signal.

Optionally, the third channel and/or signal may be at least one of thefollowing: a sounding reference signal SRS, a physical random accesschannel PRACH, a physical uplink shared channel PUSCH, a physical uplinkcontrol channel PUCCH, an uplink tracking signal, an uplink discoverysignal, an uplink beam reference signal, an uplink mobility referencesignal, an uplink demodulation reference signal, and an uplink phasetracking reference signal.

Optionally, if the UE determines that the transmitting beam or thereceiving beam for the third channel and/or signal is the same as thatfor the target channel and/or signal, or the UE needs to determine thata QCL relationship exists between the antenna port for the third channeland/or signal and the antenna port for the target channel and/or signal,the UE transmits the target channel and/or signal and the third channeland/or signal. If the UE determines that the transmitting beam or thereceiving beam for the third channel and/or signal is different fromthat for the target channel and/or signal, or the UE determines that noQCL relationship exists between the antenna port for the third channeland/or signal and the antenna port for the target channel and/or signal,the following implementation methods are available.

Implementation method 1: The UE determines, based on a predefinedpriority, to transmit one of the target channel and/or signal and thethird channel and/or signal on the symbols. For example, the predefinedpriority may be that a priority of a PUSCH is lower than that of an SRS,and that a priority of a PUCCH is higher than that of the SRS. In thiscase, for example, if the target channel or signal or both are an SRS,and the third channel and/or signal is a PUSCH, the PUSCH is not mappedto a symbol of the SRS, and rate matching is performed. For anotherexample, if the target channel and/or signal is a PUCCH, and the thirdchannel and/or signal is an SRS, the SRS is not mapped to a symbol ofthe PUCCH. In addition, for example, it may be further defined that apriority of a symbol carrying uplink control information or carrying aDMRS on the PUSCH is higher than that of the SRS, or that a priority ofa symbol of a front-loaded DMRS on the PUSCH is higher than that of theSRS, and that a priority of an additional DMRS on the PUSCH is lowerthan or higher than that of the SRS. For another example, it may bedefined that a priority of a PUCCH carrying a CSI is lower than that ofthe SRS. For example, if the target channel and/or signal is a PUCCH,and the third channel and/or signal is an SRS, the PUCCH is not mappedto a symbol of the SRS. Optionally, a quantity of symbols, a format, aquantity of occupied frequency domain resources, or a quantity ofoccupied RBs of the PUCCH may be adjusted in a predefined manner, sothat the PUCCH is not mapped to a symbol of the SRS and the UE cantransmit the PUCCH.

Implementation method 2: The base station configures priorityinformation. For example, the priority in the implementation method 1may be configured by the base station, for example, configured by usingRRC signaling or MAC CE signaling. The UE determines, based on thepriority information configured by the base station and the method inthe implementation method 1, mapping and/or rate matching between thetarget channel and/or signal and the third channel and/or signal.

Optionally, in the foregoing implementation method, frequency domainresources occupied by the target channel and/or signal may be differentfrom or partially or completely overlap frequency domain resourcesoccupied by the third channel and/or signal.

Optionally, in the foregoing implementation method, if some or alltime-frequency resources of the target channel and/or signal are thesame as those of the third channel and/or signal, the followingprocessing methods are available.

Processing method 1: Determine a channel and/or signal of a highpriority based on the priority in the foregoing implementation method.The UE maps the channel and/or signal of the high priority based on aconfiguration of the channel and/or signal of the high priority, and theUE does not transmit a channel and/or signal of a low priority.

Processing method 2: Determine a channel and/or signal of a highpriority based on the priority in the foregoing implementation method.The UE maps the channel and/or signal of the high priority based on aconfiguration of the channel and/or signal of the high priority, and theUE transmits a channel and/or signal of a low priority on atime-frequency resource other than a time-frequency resource of thechannel and/or signal of the high priority. Specifically, when thechannel and/or signal of the low priority is a PUSCH, the PUSCH ismapped to a time-frequency resource that is used for transmitting thePUSCH and configured or scheduled by the base station, other than thetime-frequency resource of the channel and/or signal of the highpriority. When the channel and/or signal of the low priority is an SRS,on symbols in which some or all time-frequency resources of the targetchannel and/or signal are the same as those of the third channel and/orsignal, the SRS is mapped to some or all resources in frequency domainresources that are different from the frequency domain resources of thechannel and/or signal of the high priority in a configured SRSbandwidth. For example, specifically, it needs to be ensured that abandwidth to which the SRS is mapped is an integer multiple of four RBs,and the frequency domain resources to which the SRS is mapped areconsecutive. Further, the UE may determine a sequence of the SRS basedon the frequency domain resources to which the SRS is mapped. When thechannel and/or signal of the low priority is a PUCCH, the PUCCH ismapped to time-frequency resources other than the time-frequencyresources of the channel and/or signal of the high priority, and the UEdetermines, based on the resources to which the PUCCH is mapped, atleast one of a quantity of symbols, a format, and a bandwidth of thePUCCH, and uplink control information included in the PUCCH, andtransmits the PUCCH.

Optionally, the processing method 1 and the processing method 2 may befurther used when there is no first indication information, or whenthere is no transmitting beam.

In an extension of the present invention, the information transmissionmethod may be further extended to a downlink direction. In this case,the UE determines the second resource based on the first resource andthe first indication information, and determines a downlink receivingbeam based on the beam corresponding to the second resource. Forexample, the method used in an uplink direction for determining atransmitting beam in this embodiment of the present invention may beused in the downlink direction to determine a receiving beam.

After the UE receives the first indication information transmitted bythe base station, the UE may first determine, based on thecorrespondence included in the first indication information and thefirst resource included in the configured resource group, the secondresource corresponding to the first resource, and then determine, basedon the known correspondence between the second resource and the beam andthe beam corresponding to the second resource, the downlink receivingbeam for the target channel and/or signal.

For example, when the UE receives other information on the secondresource and the corresponding beam, the correspondence between thesecond resource and the downlink receiving beam is known, and in thiscase, the downlink receiving beam corresponding to the second resourcemay be directly determined as the downlink receiving beam for the targetchannel and/or signal. When the UE transmits other information on thesecond resource and the corresponding beam, the correspondence betweenthe second resource and the uplink transmitting beam is known, and inthis case, the downlink receiving beam for the target channel and/orsignal may be determined based on the uplink transmitting beamcorresponding to the second resource by using the correspondence betweenthe uplink and downlink beams. Optionally, the beam may also be aspatial filter, or a QCL relationship exists between the antenna portfor the signal transmitted on the second resource and the antenna portfor the target channel and/or signal.

Optionally, in the foregoing step and embodiment, if there is nocorresponding first signaling indicating the correspondence between thefirst resource and the second resource, it is predefined that acorrespondence exists between the first resource and a resource occupiedfor transmitting the target channel and/or signal before the firstresource. For example, a beam or a spatial filter for receiving a targetchannel and/or signal at a previous time is used to transmit the targetchannel and/or signal at this time, or for example, a QCL relationshipexists between the antenna port for the target channel and/or signal andan antenna port for transmitting a channel and/or signal at a previoustime. Optionally, if there is no corresponding first signalingindicating the correspondence between the first resource and the secondresource, it is predefined that the user equipment itself determines areceiving beam used for the target channel and/or signal, or a signalhaving a QCL relationship with the target channel and/or signal.Optionally, if there is no corresponding first signaling indicating thecorrespondence between the first resource and the second resource, andthe target channel and/or signal is received for the first time, it ispredefined that the user equipment itself determines a receiving beamused for the target channel and/or signal, or a signal having a QCLrelationship with the target channel and/or signal.

Optionally, in the foregoing step or embodiment, if the UE receives orthe base station transmits a third channel and/or signal on some or allof symbols occupied by the target channel and/or signal, the UE needs todetermine whether a transmit or receiving beam for the third channeland/or signal is the same as that for the target channel and/or signal,where the beam may be a spatial filter, or the UE needs to determinewhether a QCL relationship exists between an antenna port for the thirdchannel and/or signal and the antenna port for the target channel and/orsignal. Optionally, the method for indicating the target channel and/orsignal in the present invention may be used to indicate the thirdchannel and/or signal, for example, indicate a correspondence betweenthe third channel and/or signal and a fourth resource, or indicate acorrespondence between the third channel and/or signal and a beam or aspatial filter or whether a QCL relationship exists between the port forthe third channel and/or signal and a port for a signal transmitted on afourth resource. In this case, the UE may determine, based on whetherthe second resource is the same as the fourth resource, whether thereceiving beam for the third channel and/or signal is the same as thatfor the target channel and/or signal, where the beam may be a spatialfilter, or the UE needs to determine whether a QCL relationship existsbetween the antenna port for the third channel and/or signal and theantenna port for the target channel and/or signal.

In this case, the third channel and/or signal is a downlink channeland/or signal, and may be at least one of the following: a primarysynchronization signal, a secondary synchronization signal, asynchronization signal block, a physical broadcast channel, a CSI-RS, atracking reference signal (TRS), a phase tracking reference signal(PT-RS), a demodulation reference signal (DMRS), a physical downlinkcontrol channel, a physical downlink shared channel, and a controlresource set CORESET.

Optionally, if the UE determines that the receiving beam for the thirdchannel and/or signal is the same as that for the target channel and/orsignal, or the UE needs to determine that a QCL relationship existsbetween the antenna port for the third channel and/or signal and theantenna port for the target channel and/or signal, the UE receives thetarget channel and/or signal and the third channel and/or signal. If theUE determines that the receiving beam for the third channel and/orsignal is different from that for the target channel and/or signal, orthe UE determines that no QCL relationship exists between the antennaport for the third channel and/or signal and the antenna port for thetarget channel and/or signal, the following implementation methods areavailable.

Implementation method 1: The UE determines, based on a predefinedpriority, that one of the target channel and/or signal and the thirdchannel and/or signal is received on the symbols or mapped to thesymbols. For example, the predefined priority may be that a priority ofa PDSCH is lower than that of a CSI-RS, and that a priority of a PDCCHis higher than that of the CSI-RS. In this case, for example, if thetarget channel and/or signal is a CSI-RS, and the third channel and/orsignal is a PDSCH, the PDSCH is not mapped to a symbol of the CSI-RS,and rate matching is performed. For another example, if the targetchannel and/or signal is a PDCCH, and the third channel and/or signal isa CSI-RS, the CSI-RS is not mapped to a symbol of the PDCCH. Inaddition, for example, it may be further defined that a priority of asymbol carrying a front-loaded DMRS on the PDSCH is higher than that ofthe CSI-RS, and that a priority of an additional DMRS on the PDSCH islower than or higher than that of the SRS. For another example, if thetarget channel and/or signal is a CSI-RS, and the third channel and/orsignal is a synchronization signal or a synchronization signal block,the CSI-RS is not mapped to the symbol.

Implementation method 2: The base station configures priorityinformation. For example, the priority in the implementation method 1may be configured by the base station, for example, configured by usingRRC signaling or MAC CE signaling. The UE determines, based on thepriority information configured by the base station and the method inthe implementation method 1, mapping and/or rate matching between thetarget channel and/or signal and the third channel and/or signal.

Optionally, if the UE determines that the receiving beam for the thirdchannel and/or signal is the same as that of a first part of antennaports for the target channel and/or signal, or the UE needs to determinethat a QCL relationship exists between the antenna port for the thirdchannel and/or signal and a first part of antenna ports for the targetchannel and/or signal, the UE receives the target channel and/or signalon the first part of antenna ports and the third channel and/or signal.For example, when the target channel and/or signal is a PDSCH or a DMRSof a PDSCH, and the third channel and/or signal is a CSI-RS, the firstpart of antenna ports for the target channel and/or signal may beantenna ports in a DMRS group. If the UE determines that the receivingbeam for the third channel and/or signal is different from that of asecond part of antenna ports for the target channel and/or signal, orthe UE determines that no QCL relationship exists between the antennaport for the third channel and/or signal and a second part of antennaports for the target channel and/or signal, the following implementationmethods are available.

Implementation method 1: The UE determines, based on a predefinedpriority, that one of the target channel and/or signal on the secondpart of antenna ports and the third channel and/or signal is received onthe symbols or mapped to the symbols. For example, the predefinedpriority may be that the priority of the PDSCH is lower than that of theCSI-RS. In this case, for example, if the target channel and/or signalis the PDSCH or the DMRS of the PDSCH, and the third channel and/orsignal is the CSI-RS, the PDSCH on the second part of antenna ports isnot mapped to a symbol of the CSI-RS, and rate matching is performed.

Implementation method 2: The base station configures priorityinformation. For example, the priority in the implementation method 1may be configured by the base station, for example, configured by usingRRC signaling or MAC CE signaling. The UE determines, based on thepriority information configured by the base station and the method inthe implementation method 1, mapping and/or rate matching between thetarget channel and/or signal on the second part of antenna ports and thethird channel and/or signal.

Optionally, the base station configures an association between theantenna port for the third channel and/or signal and the antenna portfor the target channel and/or signal, and the third channel and/orsignal and the target channel and/or signal may be simultaneouslytransmitted on the associated ports. To be specific, if an associationexists between an antenna port a for the third channel and/or signal andan antenna port b for the target channel and/or signal, regardless ofwhether a receiving beam of the antenna port a for the third channeland/or signal is the same as a receiving beam of the antenna port b forthe target channel and/or signal, or whether a QCL relationship existsbetween the antenna port a for the third channel and/or signal and theantenna port b for the target channel and/or signal, the third channeland/or signal may be transmitted on the antenna port a and the targetchannel and/or signal may be transmitted on the antenna port bsimultaneously.

Optionally, the association between the antenna port for the thirdsignal and/or channel and the antenna port for the target channel and/orsignal may also be reported by the user equipment.

Optionally, if the first indication information is used to indicate thata previously used k^(th) receiving beam is used for the target channeland/or signal or that the first resource corresponds to a secondresource indicated previously at a k^(th) time, where k may beconfigured or predefined by the base station, for example, k=1 or k=2,the UE uses the previously used k^(th) receiving beam, or determines anuplink transmitting beam or a receiving beam based on a correspondencebetween the first resource and the second resource indicated previouslyat the k^(th) time, or determines, based on a correspondence between thefirst resource and the second resource indicated previously at thek^(th) time, that a QCL relationship exists between the antenna portused for the target channel and/or signal and the antenna port used forthe signal transmitted on the second resource. Specifically, the methodfor determining the transmitting beam or the receiving beam or the QCLrelationship in this embodiment of the present invention may be used.

Optionally, if the first indication information is used to indicate thatthe receiving beam used for the target channel and/or signal isdetermined by the UE itself or that the antenna port having a QCLrelationship with the antenna port used for the target channel and/orsignal is not limited, the UE itself determines the receiving beam forthe target channel and/or signal, or the antenna port having a QCLrelationship with the antenna port used for the target channel and/orsignal is not limited.

Optionally, in another implementation solution, in the foregoing stepand embodiment, if there is no corresponding first signaling indicatingthe correspondence between the first resource and the second resource,it is predefined that a correspondence exists between the first resourceand a resource occupied for transmitting a target channel and/or signalbefore the first resource. For example, a beam or a spatial filter fortransmitting a target channel and/or signal at a previous time is usedto transmit the target channel and/or signal at this time, or forexample, a QCL relationship exists between the antenna port for thetarget channel and/or signal and an antenna port for transmitting achannel and/or signal at a previous time. Optionally, if there is nocorresponding first signaling indicating the correspondence between thefirst resource and the second resource, it is predefined that the userequipment itself needs to determine a receiving beam used for the targetchannel and/or signal, or a signal having a QCL relationship with thetarget channel and/or signal. Optionally, if there is no correspondingfirst signaling indicating the correspondence between the first resourceand the second resource, and the target channel and/or signal istransmitted for the first time, it is predefined that the user equipmentitself needs to determine a receiving beam used for the target channeland/or signal, or a signal having a QCL relationship with the targetchannel and/or signal, or that a signal having a QCL relationship withthe target channel and/or signal is not limited.

506. The UE transmits a target channel and/or signal on the firstresource and on the uplink transmitting beam.

It should be noted that, detailed descriptions of step 501 to step 506in this embodiment of the present invention are similar to detaileddescriptions of step 401 to step 406 in another embodiment of thepresent invention. For the detailed descriptions of step 501 to step 506in this embodiment of the present invention, refer to the detaileddescriptions of step 401 to step 406 in another embodiment of thepresent invention. Details are not further described herein again.

In the information transmission method provided by this embodiment ofthe present invention, the base station configures the at least onefirst resource used to transmit the target channel and/or signal for theUE, and transmits the first indication information used to indicate thecorrespondence between the first resource and the second resource to theUE, so that the UE can determine, based on the first resource and thefirst indication information, a beam required for transmitting thetarget channel and/or signal. Therefore, when the target channel orsignal or both are an SRS, the UE can transmit the SRS by using thedetermined beam required for transmitting the target channel and/orsignal, so as to implement beamforming on the SRS.

FIG. 6 is a flowchart of another information transmission methodaccording to an embodiment of the present invention. As shown in FIG. 6,the method may include the following steps.

601. A UE transmits capability indication information to a base station.

To enable the base station to configure a resource for the UE based on abeam capability of the UE, the UE may report its own beam capability tothe base station. Specifically, the UE may report its own beamcapability by transmitting the capability indication information to thebase station.

For example, the UE may transmit the capability indication informationto the base station by using a message 3 (Message 3) and/or uplinkhigher layer signaling.

The capability indication information includes a maximum quantity ofbeams supported by the UE in a capability type, or the capabilityindication information includes a quantized value of a maximum quantityof beams supported by the UE in a capability type. The capability typemay include a beam management stage and/or an optional range of beams.In addition, the capability type may be predefined, or may be configuredby the base station.

For example, when the capability type includes the beam managementstage, the beam management stage may include a U-1 stage, a U-2 stage,and a U-3 stage. At the U-1 stage, the base station may measuredifferent transmitting beams of the UE, so as to support selection of atransmitting beam of the UE or selection of a receiving beam of the basestation. At the U-2 stage, the base station may measure its owndifferent receiving beams (in this case, correspondingly, the UE maytransmit signals on a same transmitting beam to the base station), so asto support possible receiving beam switching within the base station orbetween base stations. At the U-3 stage, the base station may measureits own different receiving beams (in this case, correspondingly, the UEmay transmit signals on different transmitting beams to the basestation), so that the UE can change its own transmitting beam in abeamforming scenario.

When the capability type includes the optional range of beams, theoptional range of beams (referring to transmitting beams) may include 0degrees to 360 degrees, 45 degrees to 135 degrees, or the like.

For example, when the capability type includes the beam managementstage, and the maximum quantity of beams supported by the UE in thecapability type is used in capability indication information reporting,as shown in FIG. 7, assuming that the maximum quantity of beamssupported by the UE at the U-1 stage is 4 and the maximum quantity ofbeams supported by the UE at the U-3 stage is 5, the capabilityindication information transmitted by the UE to the base station mayinclude: the maximum quantity of beams supported at the U-1 stage is 4,and the maximum quantity of beams supported at the U-3 stage is 5.

For another example, when the capability type includes the optionalrange of beams, and the quantized value of the maximum quantity of beamssupported by the UE in the capability type is used in capabilityindication information reporting, assuming that the maximum quantity ofbeams supported by the UE at 0 degrees to 360 degrees is 16, the maximumquantity of beams supported by the UE at 45 degrees to 135 degrees is 4,the corresponding quantized value is 2 when the quantity of beams isgreater than or equal to 8 and less than 16, and the correspondingquantized value is 1 when the quantity of beams is greater than or equalto 1 and less than 8, the capability indication information transmittedby the UE to the base station may include: the quantized value of themaximum quantity of beams supported at 0 degrees to 360 degrees is 2,and the quantized value of the maximum quantity of beams supported at 45degrees to 135 degrees is 1.

602. The base station receives the capability indication informationtransmitted by the UE.

603. The base station configures a resource group for the UE based onthe capability indication information.

The resource group may include at least one resource subgroup, theresource subgroup includes at least one first resource, and the firstresource is used by the UE to transmit a target channel and/or signal.

In this embodiment of the present invention, the first resource mayinclude at least one of the following: a time domain resource, afrequency domain resource, a code domain resource, and an antenna port.The target channel and/or signal include/includes at least one of thefollowing: an SRS, a PRACH, a PUSCH, a PUCCH, an uplink tracking signal,an uplink discovery signal, an uplink beam reference signal, an uplinkmobility reference signal, and an uplink demodulation reference signal.

After the base station receives the capability indication informationtransmitted by the UE, the base station may configure, based on themaximum quantity of beams supported by the UE in different capabilitytypes or the quantized value of the maximum quantity of beams supported,a resource group corresponding to a corresponding capability type forthe UE. A principle is: a quantity of resource subgroups that may beobtained by dividing the resource group configured for the UE is lessthan or equal to the maximum quantity of beams of the UE in thecorresponding capability type.

It should be noted that, detailed descriptions of step 603 are similarto detailed descriptions of step 401 in another embodiment of thepresent invention. For the detailed descriptions of step 603 in thisembodiment of the present invention, refer to the detailed descriptionsof step 401 in another embodiment of the present invention. Details arenot further described herein in this embodiment of the presentinvention.

604. The base station transmits second indication information to the UE.

To implement division of the resource group, the base station mayfurther transmit, to the UE, the second indication information that isused by the UE to divide the resource group into the at least oneresource subgroup.

605. The UE obtains the resource group configured by the base stationfor the UE.

606. The UE receives the second indication information transmitted bythe base station.

607. The UE divides the resource group into at least one resourcesubgroup based on the second indication information.

After the UE obtains the resource group configured by the base station,and receives the second indication information transmitted by the basestation, the UE may divide the obtained resource group into the at leastone resource subgroup in a grouping manner indicated by the secondindication information.

608. The base station transmits first indication information to the UE,where the first indication information is used to indicate acorrespondence between a first resource and a beam.

The beam may be an uplink transmitting beam, or may be a downlinkreceiving beam. In order that beamforming can be implemented when the UEtransmits the target channel and/or signal, the base station indicates,to the UE by using the first indication information, a correspondencebetween each first resource in the resource group configured for the UEand a beam.

In specific implementation, the base station may indicate, to the UE,the correspondence between each first resource in the resource groupconfigured for the UE and the beam in the following different manners.

Manner 1: The first indication information includes an identity of eachfirst resource in the resource subgroup, and a number of a beamcorresponding to the identity of each first resource.

A same identity may be used to denote first resources in differentresource subgroups, and in this case, for all resource subgroupsincluded in the resource group, the correspondence may be used todetermine that the first resources correspond to a same beam.

Manner 2: The first indication information includes an identity of eachresource subgroup, and a number of a beam corresponding to the identityof each resource subgroup. In other words, all first resources includedin each resource subgroup correspond to a same beam. If the beam is adownlink transmitting beam or an uplink receiving beam, the userequipment transmits, on each resource subgroup, the target channeland/or signal by using an uplink transmitting beam paired with thedownlink transmitting beam or the uplink receiving beam.

Manner 3: The first indication information includes an identity of eachresource subgroup, and a number of each beam in a beam groupcorresponding to the identity of each resource subgroup, where the beamgroup includes at least one beam.

For example, the beam group may be a transmitting beam that is of the UEat the U-3 stage and included in a transmitting beam at the U-1 stage,or may be a beam group defined by the base station.

Manner 4: The first indication information includes an identity of eachresource subgroup, and a number of a beam group corresponding to theidentity of each resource subgroup.

In other words, in the manner 3 and the manner 4, each resource subgroupcorresponds to a beam group. Certainly, numbers of beams in beam groupsor numbers of beam groups corresponding to identities of a plurality ofresource subgroups may be the same. In other words, a plurality ofresource subgroups may correspond to one beam group.

Manner 5: The first indication information includes a number of eachbeam in a beam group.

Manner 6: The first indication information includes a number of a beamgroup.

In other words, in the manner 5 and the manner 6, all resource subgroupscorrespond to one beam group.

Because the resource group is divided into the at least one resourcesubgroup, and the correspondence between each first resource in theresource group and the beam is indicated in the manner 2 to the manner6, signaling overheads of the first indication information can bereduced effectively.

Manner 7: The first indication information includes an identity of eachresource subgroup, and an optional range of beams corresponding to theidentity of each resource subgroup.

When the base station does not know the beam capability of the UE, thebase station may indicate, to the UE, the correspondence between eachfirst resource in the resource group configured for the UE and the beamin the manner 7, so that the UE itself can select a beam in a range, andmore precise beam search can be implemented.

Manner 8: The first indication information includes an identity of eachfirst resource, and a number of a beam corresponding to the identity ofeach first resource.

Manner 9: The first indication information includes an identity of eachfirst resource, and a number of each beam in a beam group correspondingto the identity of each first resource, where the beam group includes atleast one beam (different first resources may correspond to a same beamgroup).

Manner 10: The first indication information includes an identity of eachfirst resource, and a number of a beam group corresponding to theidentity of each first resource (identities of different first resourcesmay correspond to a number of a same beam group).

In other words, in the manner 9 and the manner 10, each first resourcecorresponds to one beam group. Certainly, numbers of beams in beamgroups or numbers of beam groups corresponding to identities of aplurality of first resources may be the same. In other words, aplurality of first resources may correspond to one beam group.

Manner 11: The first indication information includes an identity of eachfirst resource, and an optional range of beams corresponding to theidentity of each first resource. When the base station does not know thebeam capability of the UE, the base station may indicate, to the UE inthe manner 11, the correspondence between each first resource in theresource group configured for the UE and the beam.

Before the base station transmits the first indication information tothe UE, the base station further needs to transmit configurationinformation used to indicate a correspondence between the beam and anumber of the beam to the UE, where the number of the beam may be asequence number of the beam selected by the base station.

609. The UE receives the first indication information transmitted by thebase station.

610. The UE determines an uplink transmitting beam based on the firstresource and the first indication information.

When the base station indicates, to the UE in the manner 1 in step 608,the correspondence between each first resource in the resource groupconfigured for the UE and the beam, after the UE receives the firstindication information, if a target channel and/or signal needs to betransmitted on a first resource, the UE may directly determine, based onthe identity of each first resource in the resource subgroup and thenumber of the beam corresponding to the identity of each first resourceincluded in the first indication information, a number of a beamcorresponding to the first resource, and then determine an uplinktransmitting beam based on the beam corresponding to the number of thebeam.

When the base station indicates, to the UE in the manner 2 in step 608,the correspondence between each first resource in the resource groupconfigured for the UE and the beam, after the UE receives the firstindication information, if a target channel and/or signal needs to betransmitted on a first resource, the UE may first determine an identityof a resource subgroup to which the first resource belongs, thendetermine, based on the determined identity of the resource subgroup,the identity of each resource subgroup, and the number of the beamcorresponding to the identity of each resource subgroup included in thefirst indication information, a number of a beam corresponding to theidentity of the resource subgroup, and determine an uplink transmittingbeam based on the beam corresponding to the number of the beam. If thebeam is a downlink transmitting beam or an uplink receiving beam, theuser equipment transmits, on each resource subgroup, the target channeland/or signal by using an uplink transmitting beam paired with thedownlink transmitting beam or the uplink receiving beam.

When the base station indicates, to the UE in the manner 3 in step 608,the correspondence between each first resource in the resource groupconfigured for the UE and the beam, after the UE receives the firstindication information, if a target channel and/or signal needs to betransmitted on a first resource, the UE may first determine an identityof a resource subgroup to which the first resource belongs, thendetermine, based on the determined identity of the resource subgroup,the identity of each resource subgroup, and the number of the beamcorresponding to the identity of each resource subgroup included in thefirst indication information, a number of each beam in a beam groupcorresponding to the identity of the resource subgroup, and determine anuplink transmitting beam based on a beam in the beam group.

When the base station indicates, to the UE in the manner 4, thecorrespondence between each first resource in the resource groupconfigured for the UE and the beam, a specific process of determining anuplink transmitting beam by the UE based on the first resource and thefirst indication information is similar to the process of determining anuplink transmitting beam by the UE when the base station indicates thecorrespondence between the first resource and the beam to the UE in themanner 3. Details are not further described herein in this embodiment ofthe present invention.

When the base station indicates, to the UE in the manner 5 or the manner6, the correspondence between each first resource in the resource groupconfigured for the UE and the beam, after the UE receives the firstindication information, if a target channel and/or signal needs to betransmitted on a first resource, the UE may determine an uplinktransmitting beam based on a beam in a beam group. All first resourcesin a resource subgroup to which the first resource belongs correspond toone uplink transmitting beam.

When the base station indicates, to the UE in the manner 7, thecorrespondence between each first resource in the resource groupconfigured for the UE and the beam, after the UE receives the firstindication information, if a target channel and/or signal needs to betransmitted on a first resource, the UE may first determine an identityof a resource subgroup to which the first resource belongs, thendetermine, based on the determined identity of the resource subgroup,the identity of each resource subgroup, and the optional range of beamscorresponding to the identity of each resource subgroup included in thefirst indication information, an optional range of beams correspondingto the identity of the resource subgroup, and determine an uplinktransmitting beam based on the optional range of beams.

When the base station indicates, to the UE in the manner 8 in step 608,the correspondence between each first resource in the resource groupconfigured for the UE and the beam, after the UE receives the firstindication information, if a target channel and/or signal needs to betransmitted on a first resource, the UE may directly determine, based onthe identity of the first resource and the number of the beamcorresponding to the identity of each first resource included in thefirst indication information, a number of a beam corresponding to thefirst resource, and then determine an uplink transmitting beam based onthe beam corresponding to the number of the beam.

When the base station indicates, to the UE in the manner 9 in step 608,the correspondence between each first resource in the resource groupconfigured for the UE and the beam, after the UE receives the firstindication information, if a target channel and/or signal needs to betransmitted on a first resource, the UE may directly determine, based onthe identity of the first resource and the number of each beam in thebeam group corresponding to the identity of each first resource includedin the first indication information, a number of each beam in a beamgroup corresponding to the identity of the first resource, and determinean uplink transmitting beam based on a beam in the beam group.

When the base station indicates, to the UE in the manner 10 or themanner 11, the correspondence between each first resource in theresource group configured for the UE and the beam, a specific process ofdetermining an uplink transmitting beam by the UE based on the firstresource and the first indication information is similar to the processof determining an uplink transmitting beam by the UE when the basestation indicates the correspondence between the first resource and thebeam to the UE in the manner 9. Details are not further described hereinin this embodiment of the present invention.

It should be noted that, detailed descriptions of step 610 are similarto detailed descriptions of step 405 in another embodiment of thepresent invention. For the detailed descriptions of step 610 in thisembodiment of the present invention, refer to the detailed descriptionsof step 405 in another embodiment. Details are not further describedherein in this embodiment of the present invention.

611. The UE transmits a target channel and/or signal on the firstresource and on the uplink transmitting beam.

After the UE determines the uplink transmitting beam, the UE maytransmit the target channel and/or signal on the first resource and onthe determined uplink transmitting beam, so as to implement beamformingon the target channel and/or signal.

In the information transmission method provided by this embodiment ofthe present invention, the base station configures the at least onefirst resource used to transmit the target channel and/or signal for theUE, and transmits the first indication information used to indicate thecorrespondence between the first resource and the beam to the UE, sothat the UE can determine, based on the first resource and the firstindication information, a beam required for transmitting the targetchannel and/or signal. Therefore, when the target channel or signal orboth are an SRS, the UE can transmit the SRS by using the determinedbeam required for transmitting the target channel and/or signal, so asto implement beamforming on the SRS.

FIG. 8 is a flowchart of another information transmission methodaccording to an embodiment of the present invention. As shown in FIG. 8,the method may include the following steps.

701. A UE transmits capability indication information to a base station.

702. The base station receives the capability indication informationtransmitted by the UE.

703. The base station configures a resource group for the UE based onthe capability indication information.

704. The base station transmits second indication information to the UE.

705. The UE obtains the resource group configured by the base stationfor the UE.

706. The UE receives the second indication information transmitted bythe base station.

707. The UE divides the resource group into at least one resourcesubgroup based on the second indication information.

708. The base station transmits first indication information to the UE,where the first indication information is used to indicate acorrespondence between a first resource and a second resource.

In order that beamforming can be implemented when the UE transmits atarget channel and/or signal, the base station indicates, to the UE byusing the first indication information, a correspondence between eachfirst resource in the resource group configured for the UE and a secondresource. The second resource includes at least one of: a time domainresource, a frequency domain resource, a code domain resource, and anantenna port that are used by the UE to transmit information to the basestation before the UE transmits the target channel and/or signal; or thesecond resource includes at least one of: a time domain resource, afrequency domain resource, a code domain resource, and an antenna portthat are used by the base station to transmit information to the UEbefore the UE transmits the target channel and/or signal. In otherwords, the base station may transmit, to the UE, the correspondencebetween the first resource and the second resource that is known to bein a correspondence to a beam, so that the UE determines a beam requiredfor beamforming.

In specific implementation, the base station may indicate, to the UE, acorrespondence between each first resource in the resource groupconfigured for the UE and a second resource in the following differentmanners.

Manner 1: The first indication information includes a correspondencebetween each first resource in the resource subgroup and the secondresource.

The following manner may be used to indicate the correspondence betweeneach first resource in the resource subgroup and the second resource:The first indication information specifically includes an identity ofeach first resource in the resource subgroup, and an identity of asecond resource corresponding to the identity of each first resource; orthe first indication information specifically includes information usedto indicate that a QCL relationship exists between an antenna port for asignal on each first resource and an antenna port for a signal on asecond resource.

In addition, further, on a basis of the manner 1, the first indicationinformation further includes a correspondence between each firstresource and an optional range of beams.

Manner 2: The first indication information includes a correspondencebetween each resource subgroup and the second resource.

The following manner may be used to indicate the correspondence betweeneach resource subgroup and the second resource: The first indicationinformation specifically includes an identity of each resource subgroup,and an identity of a second resource corresponding to the identity ofeach resource subgroup; or the first indication information specificallyincludes information used to indicate that a QCL relationship existsbetween an antenna port for a signal on each resource subgroup and anantenna port for a signal on a second resource.

Manner 3: The first indication information includes a correspondencebetween each resource subgroup and a second-resource group, where thesecond-resource group includes at least one second resource.

The following manner may be used to indicate the correspondence betweeneach resource subgroup and the second-resource group: The firstindication information specifically includes an identity of eachresource subgroup, and an identity of each second resource in asecond-resource group corresponding to the identity of each resourcesubgroup; or the first indication information specifically includes anidentity of each resource subgroup, and an identity of a second-resourcegroup corresponding to the identity of each resource subgroup.

Manner 4: The first indication information includes an identity of eachsecond resource in a second-resource group.

Manner 5: The first indication information includes an identity of asecond-resource group.

In addition, further, on a basis of the manner 2 to the manner 5, thefirst indication information further includes a correspondence betweeneach resource subgroup and an optional range of beams.

Manner 6: The first indication information includes a correspondencebetween each first resource and the second resource.

The following manner may be used to indicate the correspondence betweeneach first resource and the second resource: The first indicationinformation specifically includes an identity of each first resource,and an identity of a second resource corresponding to the identity ofeach first resource; or the first indication information specificallyincludes information used to indicate that a QCL relationship existsbetween an antenna port for a signal on each first resource and anantenna port for a signal on a second resource.

Manner 7: The first indication information includes a correspondencebetween each first resource and a second-resource group, where thesecond-resource group includes at least one second resource.

The following manner may be used to indicate the correspondence betweeneach first resource and the second-resource group: The first indicationinformation specifically includes an identity of each first resource,and an identity of each second resource in a second-resource groupcorresponding to the identity of each first resource; or the firstindication information specifically includes an identity of each firstresource, and an identity of a second-resource group corresponding tothe identity of each first resource; or the first indication informationspecifically includes information used to indicate that a QCLrelationship exists between an antenna port for a signal on each firstresource and an antenna port for a signal on a second-resource group.

Manner 8: The first indication information includes a correspondencebetween each first resource and an optional range of beams.

Optionally, the solution of the embodiment corresponding to FIG. 5 mayalso be used in this embodiment.

709. The UE receives the first indication information transmitted by thebase station.

710. The UE determines the second resource based on the first resourceand the first indication information, and determines an uplinktransmitting beam corresponding to the second resource.

After the UE receives the first indication information transmitted bythe base station, the UE may first determine, based on thecorrespondence included in the first indication information and thefirst resource included in the configured resource group, the secondresource corresponding to the first resource, and then determine, basedon the known correspondence between the second resource and the beam andthe beam corresponding to the second resource, the uplink transmittingbeam.

It should be noted that, in this embodiment of the present invention,the process of determining the second resource according to the firstindication information in this embodiment of the present invention issimilar to the process of determining a beam based on the firstindication information in step 610 in another embodiment of the presentinvention. In this embodiment of the present invention, a specificprocess of determining the second resource based on the first indicationinformation is not further described herein. For details, refer to thedetailed descriptions of determining a beam based on the firstindication information in step 610 in another embodiment of the presentinvention.

In addition, further, in the manner 1 in step 708, when the firstindication information further includes the correspondence between eachfirst resource and the optional range of beams, after the UE determinesthe second resource, the UE may use the beam corresponding to the secondresource as a reference beam, and then determine an uplink transmittingbeam in the optional range of beams based on the reference beam and theoptional range of beams. Certainly, in the manner 2 to the manner 5 instep 708, when the first indication information further includes thecorrespondence between each resource subgroup and the optional range ofbeams, after the UE determines the second resource, the UE may also usethe beam corresponding to the second resource as a reference beam, andthen determine an uplink transmitting beam in the optional range ofbeams based on the reference beam and the optional range of beams.

It should be noted that, detailed descriptions of step 710 are similarto detailed descriptions of step 505 in another embodiment of thepresent invention. For the detailed descriptions of step 710 in thisembodiment of the present invention, refer to the detailed descriptionsof step 505 in another embodiment. Details are not further describedherein in this embodiment of the present invention.

711. The UE transmits a target channel and/or signal on the firstresource and on the uplink transmitting beam.

In the information transmission method provided by this embodiment ofthe present invention, the base station configures the at least onefirst resource used to transmit the target channel and/or signal for theUE, and transmits the first indication information used to indicate thecorrespondence between the first resource and the second resource to theUE, so that the UE can determine, based on the first resource and thefirst indication information, a beam required for transmitting thetarget channel and/or signal. Therefore, when the target channel orsignal or both are an SRS, the UE can transmit the SRS by using thedetermined beam required for transmitting the target channel and/orsignal, so as to implement beamforming on the SRS.

It should be noted that, the indication method in the embodimentcorresponding to FIG. 5 may also be applied to the foregoing embodiment.

FIG. 9 is a flowchart of a capability reporting method according to anembodiment of the present invention. As shown in FIG. 9, the method mayinclude the following steps.

801. A UE transmits capability indication information to a base stationbased on a capability type.

The capability indication information includes a maximum quantity ofbeams supported by the UE in the capability type, or the capabilityindication information includes a quantized value of a maximum quantityof beams supported by the UE in the capability type.

It should be noted that, detailed descriptions of step 801 are similarto detailed descriptions of step 601 in another embodiment of thepresent invention. For the detailed descriptions of step 801, refer tothe detailed descriptions of step 601 in another embodiment of thepresent invention. Details are not further described herein in thisembodiment of the present invention.

802. The base station receives the capability indication informationtransmitted by the UE.

In the capability reporting method provided by this embodiment of thepresent invention, the UE transmits, to the base station based on thecapability type, the capability indication information including themaximum quantity of beams supported by the UE in the capability type orthe quantized value of the maximum quantity of beams supported by the UEin the capability type, so that after the base station receives thecapability indication information transmitted by the UE, the basestation can allocate a first resource to the UE based on the capabilityindication information of the UE. This avoids resource waste caused byallocation of excessive resources to the UE, or a problem of incompletebeam search caused by allocation of insufficient first resources to theUE.

FIG. 10 is a flowchart of a resource indication method according to anembodiment of the present invention. As shown in FIG. 10, the method mayinclude the following steps.

901. A base station transmits indication information to a UE, where theindication information includes a number of a beam and an identity of aresource corresponding to the number of the beam, or a number of aresource and an identity of the resource corresponding to the number ofthe resource.

The beam may be a port, or may be precoding. The resource may include atleast one of the following: a time domain resource, a frequency domainresource, a code domain resource, and an antenna port. The beam may be adownlink receiving beam, or a downlink transmitting beam, or (a pair of)a downlink receiving beam and a downlink transmitting beam, or an uplinktransmitting beam, or an uplink receiving beam, or a pair of an uplinktransmitting beam and an uplink receiving beam, or a pair of a downlinkreceiving beam and an uplink transmitting beam.

As shown in FIG. 11, different resources may correspond to a same beam.When the base station indicates, to the UE, that a beam 1 (1 is a numberof the beam) corresponds to a resource 1, the UE may determine that thebeam 1 is a beam corresponding to the resource 1. After the base stationindicates, to the UE, that the beam 1 corresponds to the resource 1, ifthe base station indicates, to the UE, that the beam 1 corresponds to aresource 2, after the UE receives the indication transmitted by the basestation and indicating that the beam 1 corresponds to the resource 2,the UE may determine that the beam 1 is a beam corresponding to theresource 2. In addition, in a period of time between transmitting thetwo indications by the base station, the UE always determines that thebeam 1 is a beam corresponding to the resource 1, until the indicationindicating that the beam 1 corresponds to the resource 2 is received.

902. The UE receives the indication information transmitted by the basestation.

In the resource indication method provided by this embodiment of thepresent invention, the base station transmits, to the UE, the indicationinformation including the number of the beam and the identity of theresource corresponding to the number of the beam, or the base stationtransmits, to the UE, the indication information including the number ofthe resource and the identity of the resource corresponding to thenumber of the resource, so that the UE determines, based on theindication information, a beam or a candidate set of beams required fortransmitting information, and transmits the information by using thedetermined beam, so as to implement beamforming. The base station maynumber only some resource identities, so as to reduce signalingoverheads when the base station indicates the number of the beam or thenumber of the resource.

The solutions provided by the embodiments of the present invention aredescribed above mainly from a perspective of interaction between networkelements. It may be understood that, to implement the foregoingfunctions, each network element, for example, the base station or theUE, includes corresponding hardware structures and/or software modulesfor performing the functions. A person skilled in the art should beeasily aware that, algorithm steps in the examples described withreference to the embodiments disclosed in the specification can beimplemented by hardware or a combination of hardware and computersoftware in the present invention. Whether a function is performed byhardware or hardware driven by computer software depends on particularapplications and design constraint conditions of the technicalsolutions. A person skilled in the art may use different methods toimplement the described functions for each particular application, butit should not be considered that the implementation goes beyond thescope of the present invention.

In the embodiments of the present invention, functional modules in thebase station and the UE may be defined according to the foregoing methodexamples. For example, each functional module may be defined in acorrespondence to each function, or two or more functions may beintegrated in one processing module. The integrated module may beimplemented in a form of hardware, or may be implemented in a form of asoftware functional module. It should be noted that, division of modulesin the embodiments of the present invention is merely an example, and isonly division of logical functions. Other division manners may beavailable in actual implementation.

When each functional module is defined in a correspondence to eachfunction, FIG. 12 is a possible schematic structural diagram of a basestation in the foregoing embodiment. As shown in FIG. 12, the basestation may include a configuration unit 1001, a transmitting unit 1002,and a receiving unit 1003.

The configuration unit 1001 is configured to support the base station inperforming step 401 in the information transmission method shown in FIG.4, step 501 in the information transmission method shown in FIG. 5, step603 in the information transmission method shown in FIG. 6, and step 703in the information transmission method shown in FIG. 8.

The transmitting unit 1002 is configured to support the base station inperforming step 403 in the information transmission method shown in FIG.4, step 503 in the information transmission method shown in FIG. 5, step604 and step 608 in the information transmission method shown in FIG. 6,step 704 and step 708 in the information transmission method shown inFIG. 8, and step 901 in the resource indication method shown in FIG. 10.

The receiving unit 1003 is configured to support the base station inperforming step 602 in the information transmission method shown in FIG.6, step 702 in the information transmission method shown in FIG. 8, andstep 802 in the capability reporting method shown in FIG. 9.

It should be noted that, all related content of steps in the foregoingmethod embodiments may be cited in function descriptions ofcorresponding functional modules. Details are not further describedherein.

The base station provided by this embodiment of the present invention isconfigured to perform the foregoing information transmission method, soas to achieve a same effect as the foregoing information transmissionmethod; or is configured to perform the foregoing resource indicationmethod, so as to achieve a same effect as the foregoing resourceindication method; or is configured to perform the foregoing capabilityreporting method, so as to achieve a same effect as the foregoingcapability reporting method.

When an integrated module is used, FIG. 13 is another possible schematicstructural diagram of a base station in the foregoing embodiment. Asshown in FIG. 13, the base station includes a processing module 1101 anda communications module 1102.

The processing module 1101 is configured to control and manage actionsof the base station. For example, the processing module 1101 isconfigured to support the base station in performing step 401 in theinformation transmission method shown in FIG. 4, step 501 in theinformation transmission method shown in FIG. 5, step 603 in theinformation transmission method shown in FIG. 6, and step 703 in theinformation transmission method shown in FIG. 8, and/or used in otherprocesses of the technology described in the specification. Thecommunications module 1102 is configured to support communicationbetween the base station and another network entity, for example,communication with a functional module or a network entity shown in FIG.1, FIG. 3, FIG. 14, or FIG. 15. For example, the communications module1102 is configured to support the base station in performing step 403 inthe information transmission method shown in FIG. 4, step 503 in theinformation transmission method shown in FIG. 5, step 602, step 604, andstep 608 in the information transmission method shown in FIG. 6, step704 and step 708 in the information transmission method shown in FIG. 8,step 802 in the capability reporting method shown in FIG. 9, and step901 in the resource indication method shown in FIG. 10. The base stationmay further include a storage module 1103, configured to store programcode and data of the base station.

The processing module 1101 may be a processor or a controller. Theprocessing module 1101 may implement or execute various illustrativelogical blocks, modules, and circuits described in the disclosure of thepresent invention. The processor may also be a combination forimplementing a computing function, for example, a combination includingone or more microprocessors, a combination of a DSP and amicroprocessor, or the like. The communications module 1102 may be atransceiver, a transceiver circuit, a communications interface, or thelike. The storage module 1103 may be a memory.

When the processing module 1101 is a processor, the communicationsmodule 1102 is a transceiver, and the storage module 1103 is a memory,the base station in this embodiment of the present invention may be thebase station shown in FIG. 2.

When each functional module is defined in a correspondence to eachfunction, FIG. 14 is a possible schematic structural diagram of the UEin the foregoing embodiment. As shown in FIG. 14, the UE may include anobtaining unit 1201, a receiving unit 1202, a transmitting unit 1203,and a determining unit 1204.

The obtaining unit 1201 is configured to support the UE in performingstep 402 in the information transmission method shown in FIG. 4, step502 in the information transmission method shown in FIG. 5, step 605 inthe information transmission method shown in FIG. 6, and step 705 in theinformation transmission method shown in FIG. 8.

The receiving unit 1202 is configured to support the UE in performingstep 404 in the information transmission method shown in FIG. 4, step504 in the information transmission method shown in FIG. 5, step 606 andstep 609 in the information transmission method shown in FIG. 6, step706 and step 709 in the information transmission method shown in FIG. 8,and step 902 in the resource indication method shown in FIG. 10.

The transmitting unit 1203 is configured to support the UE in performingstep 406 in the information transmission method shown in FIG. 4, step506 in the information transmission method shown in FIG. 5, step 601 andstep 611 in the information transmission method shown in FIG. 6, step701 and step 711 in the information transmission method shown in FIG. 8,and step 801 in the capability reporting method shown in FIG. 9.

The determining unit 1204 is configured to support the UE in performingstep 405 in the information transmission method shown in FIG. 4, step505 in the information transmission method shown in FIG. 5, step 607 andstep 610 in the information transmission method shown in FIG. 6, andstep 707 and step 710 in the information transmission method shown inFIG. 8.

It should be noted that, all related content of steps in the foregoingmethod embodiments may be cited in function descriptions ofcorresponding functional modules. Details are not further describedherein.

The UE provided by this embodiment of the present invention isconfigured to perform the foregoing information transmission method, soas to achieve a same effect as the foregoing information transmissionmethod; or is configured to perform the foregoing resource indicationmethod, so as to achieve a same effect as the foregoing resourceindication method; or is configured to perform the foregoing capabilityreporting method, so as to achieve a same effect as the foregoingcapability reporting method.

When an integrated unit is used, FIG. 15 is another possible schematicstructural diagram of the UE in the foregoing embodiment. As shown inFIG. 15, the UE includes a processing module 1301 and a communicationsmodule 1302.

The processing module 1301 is configured to control and manage actionsof the UE, for example, configured to perform step 402 and step 405 inthe information transmission method shown in FIG. 4, step 502 and step505 in the information transmission method shown in FIG. 5, step 605,step 607, and step 610 in the information transmission method shown inFIG. 6, and step 705, step 707, and step 710 in the informationtransmission method shown in FIG. 8. The communications module 1302 isconfigured to support communication between the UE and another networkentity, for example, communication with a functional module or a networkentity shown in FIG. 1, FIG. 2, FIG. 12, or FIG. 13. For example, thecommunications module 1302 supports the UE in performing step 404 andstep 406 in the information transmission method shown in FIG. 4, step504 and step 506 in the information transmission method shown in FIG. 5,step 601, step 606, step 609, and step 611 in the informationtransmission method shown in FIG. 6, step 701, step 706, step 709, andstep 711 in the information transmission method shown in FIG. 8, step801 in the capability reporting method shown in FIG. 9, and step 902 inthe resource indication method shown in FIG. 10. The UE may furtherinclude a storage module 1303, configured to store program code and dataof the UE.

The processing module 1301 may be a processor or a controller. Theprocessing module 1301 may implement or execute various illustrativelogical blocks, modules, and circuits described in the disclosure of thepresent invention. The processor may also be a combination forimplementing a computing function, for example, a combination includingone or more microprocessors, a combination of a DSP and amicroprocessor, or the like. The communications module 1302 may be atransceiver, a transceiver circuit, a communications interface, or thelike. The storage module 1303 may be a memory.

When the processing module 1301 is a processor, the communicationsmodule 1302 is a transceiver, and the storage module 1303 is a memory,the UE in this embodiment of the present invention may be the UE shownin FIG. 3.

The foregoing descriptions about implementations allow a person skilledin the art to understand that, for the purpose of convenient and briefdescription, division of the foregoing functional modules is taken as anexample for illustration. In actual application, the foregoing functionscan be allocated to different modules and implemented according to arequirement, that is, an inner structure of an apparatus is divided intodifferent functional modules to implement all or part of the functionsdescribed above.

In the several embodiments provided in this application, it should beunderstood that the disclosed apparatus and method may be implemented inother manners. For example, the described apparatus embodiment is merelyan example. For example, the module or unit division is merely logicalfunction division and may be other division in actual implementation.For example, a plurality of units or components may be combined orintegrated into another apparatus, or some features may be ignored ornot performed. In addition, the displayed or discussed mutual couplingsor direct couplings or communication connections may be implemented byusing some interfaces. The indirect couplings or communicationconnections between the apparatuses or units may be implemented inelectronic, mechanical, or other forms.

The units described as separate parts may or may not be physicallyseparate, and parts displayed as units may be one or more physicalunits, may be located in one place, or may be distributed on differentplaces. Some or all of the units may be selected according to actualneeds to achieve the objectives of the solutions of the embodiments.

In addition, functional units in the embodiments of the presentinvention may be integrated into one processing unit, or each of theunits may exist alone physically, or two or more units are integratedinto one unit. The integrated unit may be implemented in a form ofhardware, or may be implemented in a form of a software functional unit.

When the integrated unit is implemented in the form of a softwarefunctional unit and sold or used as an independent product, theintegrated unit may be stored in a readable storage medium. Based onsuch an understanding, the technical solutions in the embodiments of thepresent invention essentially, or the part contributing to the priorart, or all or some of the technical solutions may be implemented in theform of a software product. The software product is stored in a storagemedium and includes several instructions for instructing a device (whichmay be a single-chip microcomputer, a chip or the like) or a processorto perform all or some of the steps of the methods described in theembodiments of the present invention. The foregoing storage mediumincludes: any medium that can store program code, such as a USB flashdrive, a removable hard disk, a read-only memory (ROM), a random accessmemory (RAM), a magnetic disk, an optical disc, or the like.

The descriptions are only specific implementations of the presentinvention, but are not intended to limit the protection scope of thepresent invention. Any variation or replacement readily figured out by aperson skilled in the art within the technical scope disclosed in thepresent invention shall fall within the protection scope of the presentinvention. Therefore, the protection scope of the present inventionshall be subject to the protection scope of the claims.

1. An information transmission method, comprising: configuring, by anetwork device, a first resource for a communication device to transmita first signal comprising a sounding reference signal (SRS); andtransmitting, by the network device, first indication information to thecommunication device, wherein the first indication informationindicating a correspondence between the first resource and a secondresource, wherein the second resource is configured for thecommunication device to transmit a second signal to the network devicebefore transmission of the first signal, and wherein the correspondenceis used by the communication device to determine a first beam fortransmitting the first signal, and wherein the first beam is the same asa second beam for transmitting the second signal.
 2. The methodaccording to claim 1, wherein the first resource is comprised in aresource group that comprises a plurality of resources.
 3. The methodaccording to claim 1, wherein the first resource comprises at least oneof a time domain resource, a frequency domain resource, a code domainresource, or an antenna port.
 4. The method according to claim 2,wherein the first indication information comprises a correspondencebetween each of the plurality of resources in the resource group and thesecond resource.
 5. The method according to claim 4, wherein the firstindication information comprises an identity of each of the plurality ofresources in the resource group and an identity of the second resource.6. An information transmission method, comprising: obtaining, by acommunication device, a first resource for the communication device totransmit a first signal comprising a sounding reference signal (SRS);and receiving, by the communication device, first indication informationtransmitted by the network device, wherein the first indicationinformation indicating a correspondence between the first resource and asecond resource, wherein the second resource is configured for thecommunication device to transmit a second signal to the network devicebefore transmission of the first signal, and wherein the correspondenceis used by the communication device to determine a first beam fortransmitting the first signal, and wherein the first beam is the same asa second beam for transmitting the second signal.
 7. The methodaccording to claim 6, wherein the first resource is comprised in aresource group that comprises a plurality of resources.
 8. The methodaccording to claim 6, wherein the first resource comprises at least oneof a time domain resource, a frequency domain resource, a code domainresource, or an antenna port.
 9. The method according to claim 7,wherein the first indication information comprises a correspondencebetween each of the plurality of resources in the resource group and thesecond resource.
 10. The method according to claim 9, wherein the firstindication information comprises an identity of each of the plurality ofresources in the resource group and an identity of the second resource.11. A network device, comprising: a processor; a memory coupled to theprocessor, the memory comprising instructions that, when executed by theprocessor, cause the network device to: configure a first resource for acommunication device to transmit a first signal comprising a soundingreference signal (SRS); and transmit first indication information to thecommunication device, wherein the first indication informationindicating a correspondence between the first resource and a secondresource, wherein the second resource is configured for thecommunication device to transmit a second signal to the network devicebefore transmission of the first signal, and wherein the correspondenceis used by the communication device to determine a first beam fortransmitting the first signal, and wherein the first beam is the same asa second beam for transmitting the second signal.
 12. The network deviceaccording to claim 11, wherein the first resource is comprised in aresource group that comprises a plurality of resources.
 13. The networkdevice according to claim 11, wherein the first resource comprises atleast one of a time domain resource, a frequency domain resource, a codedomain resource, or an antenna port.
 14. The network device according toclaim 12, wherein the first indication information comprises acorrespondence between each of the plurality of resources in theresource group and the second resource.
 15. The network device accordingto claim 14, wherein the first indication information comprises anidentity of each of the plurality of resources in the resource group andan identity of the second resource.
 16. A communication device,comprising: a processor; a memory coupled to the processor, the memorycomprising instructions that, when executed by the processor, cause thecommunication device to: obtain a first resource configured by a networkdevice for the communication device to transmit a first signalcomprising a sounding reference signal (SRS); and receive firstindication information transmitted by the network device, wherein thefirst indication information indicating a correspondence between thefirst resource and a second resource, wherein the second resource isconfigured for the communication device to transmit a second signal tothe network device before transmission of the first signal, and whereinthe correspondence is used by the communication device to determine afirst beam for transmitting the first signal, and wherein the first beamis the same as a second beam for transmitting the second signal.
 17. Thecommunication device according to claim 16, wherein the first resourceis comprised in a resource group that comprises a plurality ofresources.
 18. The communication device according to claim 16, whereinthe first resource comprises at least one of a time domain resource, afrequency domain resource, a code domain resource, or an antenna port.19. The communication device according to claim 17, wherein the firstindication information comprises a correspondence between each of theplurality of resources in the resource group and the second resource.20. The communication device according to claim 19, wherein the firstindication information comprises an identity of each of the plurality ofresources in the resource group and an identity of the second resource.21. A non-transitory computer-readable storage medium comprisinginstructions which, when executed by a computer, cause the computer tocarry out the method of claim
 1. 22. A non-transitory computer-readablestorage medium comprising instructions which, when executed by acomputer, cause the computer to carry out the method of claim 6.